Systems and methods of defining a trimline in relation to modeled teeth including a three-dimensional model of one or more intraoral surfaces of the patient. The trimline is for use to manufacture an aligner. For one or more pairs of adjacent teeth, a scallop plane is defined based on a scallop factor. The scallop plane is used to determine the position of scallop points on a line around each tooth adjacent to an interproximal region of the pair of teeth. Transition points are then defined on the line around each tooth apically of the scallop points, and the points connected to form an initial connector curve. The initial connector curve is projected on to a mesh of the three-dimensional model, and smoothing applied to the resulting segmented connector curve. The smoothed connector curves are then joined by teeth curves to form the trimline.
An orthodontic appliance system (10) for orthodontic treatment includes an aligner (12, 14) including a shell (22, 60) having a plurality of cavities (24, 62) for receiving teeth (18). The shell (22, 60) has a plurality of walls (32, 34, 36, 70, 72, 74), including an occlusal wall (32, 70), defining the cavities (24, 62). The shell (22, 60) has an occlusion guide (42, 80) that forms a portion of the occlusal wall (32, 70). The occlusion guide (42, 80) prevents full closure of the patient's jaws. The occlusion guide (42) defines a socket portion (48) including a recessed region at which the occlusion guide (42) defines an engaged position with a projection (82) on an opposing aligner (14) or with a projection on the patent's opposing jaw when the projection (82) is received in the socket portion (48). When the aligner (12) is worn, the engaged position positions the patient's jaw at a predetermined mandibular relocated position. The recessed region includes a concave surface which may form a recess or a cup. The socket portion (48) may include a lingual lip (54) and a labial lip (56).
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
12nnnn12n122, and AB each represent domain regions containing one or more mixtures of thermoplastic polymer A and thermoplastic polymer B. The polymeric sheet is configured as a dental appliance for positioning a patient's teeth.
B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
An orthodontic appliance system for orthodontic treatment of teeth. The system includes a template with a cavity. An attachment is removably received in the receptacle and has a surface including a bonding surface. A method of manufacturing includes constructing a scaffold assembly including a base and placing a template in contact with the scaffold assembly. The method includes inserting the attachment into the receptacle. During separating, the attachment remains coupled to the template in the receptacle. A method of manufacturing includes providing a mold of the patient's teeth. The mold including at least one projection and a through-passage. The method includes placing a container of dental composite in fluid communication with the through-passage, placing a template over the at least one projection, injecting dental composite from the container through the through-passage and into the receptacle, and removing the template from the at least one projection with the filled receptacle.
Methods and devices for modifying a material property of an aligner (100) prior to or during orthodontic treatment are disclosed. Orthodontic treatment with modified aligners (100) is disclosed. Elasticity of the aligner material may be modified by a patient. Elasticity of the aligner (100) is changed from an initial value (210) to a second value (220) that is greater or less than the initial value (210). A modulus of the aligner material can be increased or decreased by changing an amount of cross-linking, changing polymerization, or crystallization of the polymer of the material without changing the shape and/or the color of the aligner (100). The modulus of the aligner material is changed after a predetermined amount of anticipated tooth movement is achieved. Modification is achievable by one or more of exposure to specific light wavelengths and intensities, such as UV light or laser light, exposure to heat by which a reaction within the aligner material is achieved.
An orthodontic appliance system (10) includes an aligner (12). The aligner (12) has a shell (22) that includes a first pair of cavities (24) and a second pair of cavities (24). Each cavity (24) of the first pair is configured to receive an anterior tooth (56). Each cavity (24) of the second pair is configured to receive a posterior tooth (64). The shell (22) includes a cavity (24) intermediate a first cavity (24) of the first pair of cavities (24) and a second cavity (24) of the second pair of cavities (24). Each intermediate cavity (24) is configured to receive a tooth intermediate the anterior (56) and posterior tooth (64). The intermediate cavity (24) may be oversized relative to the tooth. The shell (22) has walls (32, 34, 36, 40) defining the cavities (24). At least one of the walls (32, 34, 36, 40) of the intermediate cavities (24) includes a region of enhanced rigidity (42) that extends from the first cavity (24) to the second cavity (24) of the pairs of cavities (24). The region (42) may be a structure, such as a reinforcement beam (50).
An orthodontic appliance includes a portion made of a shape memory alloy having a base alloy composition of at least two different metallic elements and a treated region having an alloy composition that is depleted in at least one of the metallic elements. The base alloy may include a nickel titanium alloy (NiTi), a copper chromium nickel titanium alloy (CuCrNiTi), or a copper aluminum nickel (CuAlNi) alloy. The treated region may be depleted in at least one of copper, aluminum, nickel, and titanium relative to the base alloy composition by exposing the base alloy to a source of energy. The base alloy composition has a first austenitic finish temperature and the treated region has an austenitic finish temperature that may be different than the first austenitic finish temperature. The treated region may form a part of an archwire, a stop, a hook, a crown, a band, or an orthodontic bracket.
Systems (100) and methods (200) for generating a whole-tooth model geometric mesh (130) from surface data (114) and volumetric image data (116) are disclosed. Whole-tooth geometric meshes (130) are generated in a computationally-efficient manner. The method (200) for segmenting a whole-tooth model from volumetric image data (116) and intraoral surface data (114) includes providing volumetric image data (116) of dental anatomy, providing intraoral surface data (114) of the dental anatomy, and generating augmented image data including both volumetric image and intraoral surface data by aligning said surface (114) and volumetric image data (116). The crown sections (320) in the intraoral surface data (114) are segmented. The method (200) includes selecting a template tooth (322) from a library. The anatomical identification corresponds to the identification of a tooth of the image data. This template tooth (322) is fitted to said tooth of the augmented image data. The whole-tooth model geometric mesh (130) is provided by segmenting the tooth in the volumetric image data based on the fitted template tooth (610).
An orthodontic aligner includes a shell that defines a tooth cavity. The tooth cavity is configured to receive a patient's tooth and has an edge that defines an opening. An integral hook extends outwardly from wall portions of the shell adjacent the tooth cavity and is spaced occlusally apart from the edge. The integral hook has a side wall that defines an interior space and includes a window. The interior space opens to the tooth cavity. The window extends through the side wall so that the interior space is accessible. The window can be sized to interfere with insertion of an elastic band. A system for orthodontic treatment includes an attachment. The integral hook is configured to receive the attachment. The attachment is accessible through the window. The attachment may not fill the interior space. A method of manufacturing the orthodontic aligner includes preparing a mold including a hook mold.
A method of producing a custom dental anchor application appliance may be provided. The appliance may be for mounting one or more anchors to teeth of a patient. The appliance may be for use in orthodontic aligner treatment. The method may include forming a dental appliance. The forming may be done using a three-dimensional printing approach. The appliance may include a body. The body may include at least one anchor-locating area. The anchor-locating area may be shaped to conform to a mounting area on a surface of a tooth. The appliance may include a receiving structure. The receiving structure may be configured to removably support a dental anchor. The dental anchor may be of a predefined configuration in a fixed position and orientation relative to the body.
A method for orthodontic treatment planning (50) with aligners (126). The method includes determining an initial virtual pathway (140) for each model tooth (11-17, 21-27, 31-37, 41-48), calculating a space between adjacent pairs of model teeth at each stage (160), defining a minimum space between adjacent pairs of model teeth, and when a calculated space is less than the minimum space, creating a key-frame row (192, 194) in which each tooth position/orientation in the stage (160) is a key frame. While a calculated space is less than the minimum space, iterating for each model tooth (11-17, 21-27, 31-37, 41-48) at the key-frame row (192, 194), varying a position and/or orientation of the model tooth (11-17, 21-27, 31-37, 41-48), and calculating a space between adjacent pairs of model teeth at each stage (160) with the varied position and/or orientation of each model tooth at the key-frame row (192, 194). A plurality of stages defines an orthodontic treatment plan. Each stage (160) corresponds to an aligner (126) for orthodontic treatment of a patient.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A method for orthodontic treatment planning with aligners. The method includes determining an initial virtual pathway for each model tooth, calculating a space between adjacent pairs of model teeth at each stage, defining a minimum space between adjacent pairs of model teeth, and when a calculated space is less than the minimum space, creating a key-frame row in which each tooth position/orientation in the stage is a key frame. While a calculated space is less than the minimum space, iterating for each model tooth at the key-frame row, varying a position and/or orientation of the model tooth, and calculating a space between adjacent pairs of model teeth at each stage with the varied position and/or orientation of each model tooth at the key-frame row. A plurality of stages defines an orthodontic treatment plan. Each stage corresponds to an aligner for orthodontic treatment of a patient.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A system (10) for orthodontic treatment planning. The system (10) comprises a processor and memory. Computer-program instructions cause the system (10) to display a user interface (64, 78) on a display (52). The user interface (64, 78) is for a user (18, 26) to input a prescription (62, 76) for treatment of the patient (30). The user interface (64, 78) provides a plurality of commands (82, 100, 112) for selection. Each command (82, 100, 112) is a one-word instruction, a two-word instruction, or a three-word instruction based on orthodontic nomenclature. The system (10) receives selected two or more of the plurality of commands (82, 100, 112) into the prescription (62, 76) for treatment. The two or more selected commands (82, 100, 112) are to be applied according to a predetermined protocol to the patient's teeth. A database is configured to receive the prescription (62, 76) for treatment of the patient (30) and to contain a plurality of other prescriptions (62, 76) for treatment of other patients. The database is configured to receive a plurality of other prescriptions (62, 76) from a plurality of users of the system (10).
G16H 20/40 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
An aligner including a feature positioned on or in at least one of the buccal sidewall or lingual sidewall of the aligner that is configured to attach to an elastic member. The aligner applies a greater corrective force to a patient's dentition when the elastic member is attached. The feature may include a protrusion in the sidewall with an opening to a space configured to receive and attach to an elastic member hook coupled to the elastic member. The feature may include a through-bore in the sidewall that is configured to receive and attach to the elastic member. The feature may include an add-on hook on the sidewall that is configured to receive and attach to the elastic member. The add-on hook may be positioned on a protrusion in the sidewall. The protrusion may receive and engage with a dental attachment positioned on a surface of a patient's tooth.
An aligner including a feature positioned on or in at least one of the buccal sidewall or lingual sidewall of the aligner that is configured to attach to an elastic member. The aligner applies a greater corrective force to a patient's dentition when the elastic member is attached. The feature may include a protrusion in the sidewall with an opening to a space configured to receive and attach to an elastic member hook coupled to the elastic member. The feature may include a through-bore in the sidewall that is configured to receive and attach to the elastic member. The feature may include an add-on hook on the sidewall that is configured to receive and attach to the elastic member. The add-on hook may be positioned on a protrusion in the sidewall. The protrusion may receive and engage with a dental attachment positioned on a surface of a patient's tooth.
A device for use by a clinician includes a tip structure that is configured to extend from a handle and to be inserted into a patient's mouth and at least one light source that is capable of emitting incoherent actinic radiation from the device. The light source is on the tip structure or within the handle. A light device includes a shell that is configured to engage an orthodontic bracket while the orthodontic bracket is attached to a tooth and at least one light source is embedded in the shell and is capable of emitting incoherent actinic radiation. A method of debonding an orthodontic appliance from a tooth includes exposing an adhesive secured to the tooth to incoherent actinic radiation that reduces a bond strength of at least a portion of the adhesive and separating the orthodontic appliance from the tooth at the portion of the adhesive having reduced bond strength.
A computer-implemented method for marking an object on an aligner. The aligner surface is modeled. The method includes calculating a normal for each tile in a tessellated surface and disqualifying a tile from being selected. For tiles not disqualified, a patch is identified that produces a markable area. The method includes selecting an object to be marked, calculating a location of the object in the markable area, and providing the location of the object to a marking device. Disqualifying includes comparing an angle between a normal and an orientation of the beam to an origin of the calculated normal on each tile. Disqualifying includes disqualifying the at least one tile when the angle is outside of a range of −90° to +90°. Identifying the patch includes separating the patch into at least two smaller patches, and one of the two smaller patches of tiles is the markable area.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
Systems and methods of defining a trimline (92, 94) in relation to modeled teeth (74, 80, 286) including a three-dimensional model (70) of one or more intraoral surfaces of the patient. The trimline (92, 94) is for use to manufacture an aligner (32). For one or more pairs of adjacent teeth (74, 80, 286), a scallop plane (332) is defined based on a scallop factor (324). The scallop plane (332) is used to determine the position of scallop points (336) on a line around each tooth (132) adjacent to an interproximal region (327) of the pair of teeth (74, 80, 286). Transition points (128, 342) are then defined on the line around each tooth (132) apically of the scallop points (336), and the points connected to form an initial connector curve (100, 346). The initial connector curve (100, 346) is projected on to a mesh (358) of the three-dimensional model (70), and smoothing applied to the resulting segmented connector curve (360). The smoothed connector curves (372) are then joined by tooth curves (98) to form the trimline (92, 94).
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
An orthodontic adhesive includes components capable of allowing easy debonding of an orthodontic device from a patient's tooth. The adhesive includes an engineered marine mussel protein. The adhesive may include at least one photocleavable moiety. The adhesive is applied in one or more individual layers. One of the components of the adhesive is capable of binding to a tooth and the other component may be capable of binding to an orthodontic device. A method of adhering an orthodontic device to a tooth includes applying a layer of an orthodontic adhesive to either the tooth or the orthodontic device or the tooth and the orthodontic device and affixing the orthodontic device to the tooth with the orthodontic adhesive situated between the tooth and the orthodontic device. The engineered marine mussel protein includes one or more catechol moieties or one or more derivatives of a catechol moiety.
An orthodontic aligner includes a shell defining at least one cavity sized to receive one of a patient's teeth. The cavity includes a lingual portion, a labial portion, and an occlusal portion. A bite structure forms at least a portion of the occlusal portion and is configured to be spaced apart from an occlusal surface of the patient's tooth by a distant sufficient to interfere with full closure of the patient's jaws. The bite structure has a non-planar surface that does not conform to the patient's tooth. The non-planar surface includes at least two spaced-apart projections separated by a boundary. The spaced-apart projections are spherical-like projections or ellipsoidal-like projections. The boundary has a grid-like appearance that spans the bite structure side to side. The spaced-apart projections define a tooth-engaging plane of the bite structure. The bite structure is an integral portion of the shell.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
41 - Education, entertainment, sporting and cultural services
44 - Medical, veterinary, hygienic and cosmetic services; agriculture, horticulture and forestry services
Goods & Services
Educational services; training services; providing training services in the field of dental and orthodontic practice and management; information, consultancy and advice relating to all of the aforesaid services. Consultation services in the fields of dentistry and orthodontics, practice workflow optimization and dental and orthodontic practice efficiency; consultation services in the field of dental and orthodontic practice and management; Clinical dental and orthodontic practice consultation services; Treatment planning services in the areas of dentistry and orthodontics; medical and dental treatment planning; dental services; orthodontic services; information, consultancy and advice relating to all of the aforesaid services.
An orthodontic appliance for attachment to an archwire having a rectangular cross section. The appliance includes a body having a base portion from which a pair of jaws extend. Each jaw a slot for receiving the archwire. A pair of opposing surfaces of the jaws contact the archwire along two edges and maintain a grip on the archwire during treatment. The grip is maintained on the archwire by residual elastic strain from an interference fit between the archwire and the slot. The appliance is not plasticly deformed. Each of the pair of opposing surfaces includes a concave portion to contact the archwire only at the two edges. The base portion includes a pedestal portion between the opposing surfaces. The pedestal portion has a flat that contacts a side of the archwire. Contact on the two edges and one side provides a triangular grip on the archwire.
Methods for orthodontic treatment planning include modifying a digital picture of a patient based on a tooth model produced during simulated orthodontic treatment after movement of at least one model tooth to produce a modified digital image depicting the at least one model tooth after movement. The method includes matching and morphing information from the digital picture into the modified digital image. Modifying includes matching a model tooth in the T1 model to a tooth in the digital picture and morphing that information into the modified digital image. Morphing may include projecting a model tooth in the T1 model to an image plane of the digital picture and projecting a model tooth from an intermediate T model to the image plane. Parameterization of the projections of each model may be used to develop a pixel correspondence map, which is usable during rendering of a tooth in the modified digital image.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/62 - Methods or arrangements for recognition using electronic means
G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
G06T 11/60 - Editing figures and textCombining figures or text
28.
Systems and methods for designing and manufacturing an orthodontic appliance
Systems and methods of defining a trimline in relation to modeled teeth including modeled gingiva. The trimline is for use to manufacture an aligner. A margin point is placed proximate a gingival margin at each tooth on at least one jaw in the model. A trimline connects the plurality of margin points from which machine code is generated. The aligner manufactured includes an edge that correlates with the trimline according to the machine code. A margin point may be proximate a gingival zenith. At least one tooth cooperates with the modeled gingiva to define a line around the tooth. The trimline includes at least one tooth curve and at least one connector curve connected to the tooth curve at a transition point. At least one control point is on the trimline between two margin points. The trimline is defined by a spline that may be a Bèzier curve.
Systems and methods of defining a trimline in relation to modeled teeth including a three-dimensional model of one or more intraoral surfaces of the patient. The trimline is for use to manufacture an aligner. For one or more pairs of adjacent teeth, a scallop plane is defined based on a scallop factor. The scallop plane is used to determine the position of scallop points on a line around each tooth adjacent to an interproximal region of the pair of teeth. Transition points are then defined on the line around each tooth apically of the scallop points, and the points connected to form an initial connector curve. The initial connector curve is projected on to a mesh of the three-dimensional model, and smoothing applied to the resulting segmented connector curve. The smoothed connector curves are then joined by teeth curves to form the trimline.
A method for altering an orthodontic archwire of a unitary piece of shape memory alloy having a composition and generally uniformly formed properties along its length to different stiffness profiles along the length of the archwire. In one embodiment, the method includes determining a stress profile for teeth at a location. The method may include calculating a force the archwire is to produce on the teeth to satisfy the determined stress profile and determining an altered stiffness of a section of the archwire based on the calculated force. The method may include changing the composition of the section based on the determined altered stiffness. The method may include determining a load for teeth and calculating a force the archwire is to produce on the teeth to satisfy the determined load.
An orthodontic adhesive includes components capable of allowing easy debonding of an orthodontic device from a patient's tooth. The adhesive includes an engineered marine mussel protein. The adhesive may include at least one photocleavable moiety. The adhesive is applied in one or more individual layers. One of the components of the adhesive is capable of binding to a tooth and the other component may be capable of binding to an orthodontic device. A method of adhering an orthodontic device to a tooth includes applying a layer of an orthodontic adhesive to either the tooth or the orthodontic device or the tooth and the orthodontic device and affixing the orthodontic device to the tooth with the orthodontic adhesive situated between the tooth and the orthodontic device. The engineered marine mussel protein includes one or more catechol moieties or one or more derivatives of a catechol moiety.
A computer-implemented method (100) for marking an object (20) on an aligner (10). The aligner surface is modeled. The method (100) includes calculating a normal (110) for each tile (94) in a tessellated surface (86) and disqualifying a tile (94) from being selected. For tiles (94) not disqualified, a patch (114) is identified that produces a markable area (186). The method (100) includes selecting an object (20) to be marked, calculating a location (176) of the object (20) in the markable area (186), and providing the location (176) of the object (20) to a marking device (62). Disqualifying includes comparing an angle between a normal (224) and an orientation of the beam (68) to an origin of the calculated normal (224) on each tile (94). Disqualifying includes disqualifying the at least one tile (94) when the angle is outside of a range of -90° to +90°. Identifying the patch (114) includes separating the patch (114) into at least two smaller patches, and one of the two smaller patches of tiles (94) is the markable area (186).
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A computer-implemented method for marking an object on an aligner. The aligner surface is modeled. The method includes calculating a normal for each tile in a tessellated surface and disqualifying a tile from being selected. For tiles not disqualified, a patch is identified that produces a markable area. The method includes selecting an object to be marked, calculating a location of the object in the markable area, and providing the location of the object to a marking device. Disqualifying includes comparing an angle between a normal and an orientation of the beam to an origin of the calculated normal on each tile. Disqualifying includes disqualifying the at least one tile when the angle is outside of a range of −90° to +90°. Identifying the patch includes separating the patch into at least two smaller patches, and one of the two smaller patches of tiles is the markable area.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
Systems and methods of defining a trimline in relation to modeled teeth including modeled gingiva. The trimline is for use to manufacture an aligner. A margin point is placed proximate a gingival margin at each tooth on at least one jaw in the model. A trimline connects the plurality of margin points from which machine code is generated. The aligner manufactured includes an edge that correlates with the trimline according to the machine code. A margin point may be proximate a gingival zenith. At least one tooth cooperates with the modeled gingiva to define a line around the tooth. The trimline includes at least one tooth curve and at least one connector curve connected to the tooth curve at a transition point. At least one control point is on the trimline between two margin points. The trimline is defined by a spline that may be a Bèzier curve.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
Systems and methods of defining a trimline in relation to modeled teeth including modeled gingiva. The trimline is for use to manufacture an aligner. A margin point is placed proximate a gingival margin at each tooth on at least one jaw in the model. A trimline connects the plurality of margin points from which machine code is generated. The aligner manufactured includes an edge that correlates with the trimline according to the machine code. A margin point may be proximate a gingival zenith. At least one tooth cooperates with the modeled gingiva to define a line around the tooth. The trimline includes at least one tooth curve and at least one connector curve connected to the tooth curve at a transition point. At least one control point is on the trimline between two margin points. The trimline is defined by a spline that may be a Bèzier curve.
An orthodontic bracket for coupling an archwire with a tooth includes a bracket body that has an archwire slot adapted to receive the archwire. A movable member is engaged with the bracket body and is movable between an opened position and a closed position. The bracket body and movable member are made from a transparent or translucent ceramic for improved aesthetics. The bracket body may include one or more stop surfaces that limit movement of the moveable member in the gingival direction. The bracket body may include a support surface that is positioned lingually of a labial edge of the archwire slot. The moveable member may include a bracket-engaging portion having a first surface confronting the bracket body and a slot-covering portion having a second surface confronting the archwire slot, the first and second surfaces being offset from one another.
An orthodontic appliance for dental treatment includes an aligner or a bracket having a dimension (G, I, V) that compensates for a restorative treatment. The dimension (G, I, V) compensates for gingival alteration, hard tissue build-up, or hard tissue removal on the patient's teeth. An apparatus (10) for smile design includes a first data structure (20) that defines a digital 3-D smile template (100) of teeth arranged in accordance with predetermined criteria. A method of planning dental treatment of a patient includes superimposing a digital 3-D smile template (100) of teeth with a digital orthodontic setup (26) of a patient's teeth. A computer program product (300) for smile design includes instructions that cause a processor (302) to retrieve a first data structure (318) that defines a smile template (100) of teeth arranged in accordance with predetermined criteria, retrieve a second data structure (318) that defines an orthodontic setup (26) of a patient's teeth, and superimpose the smile template (100) on the digital orthodontic setup (26) using the first and second data structures (318).
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A device (100, 200, 300) for use by a clinician includes a tip structure (106, 130, 140, 160, 180, 206, 400, 500, 600, 700) that is configured to extend from a handle (104) and to be inserted into a patient's mouth and at least one light source (120, 210, 312, 406, 708) that is capable of emitting incoherent actinic radiation from the device (100, 200, 300). The light source (120, 210, 312, 406, 708) is on the tip structure (106, 130, 140, 160, 180, 206, 400, 500, 600, 700) or within the handle (104). A light device (100, 200, 300) includes a shell (302, 402, 502) that is configured to engage an orthodontic bracket (12) while the orthodontic bracket (12) is attached to a tooth (14) and at least one light source (120, 210, 312, 406, 708) is embedded in the shell (302, 402, 502) and is capable of emitting incoherent actinic radiation. A method of debonding an orthodontic appliance (12) from a tooth (14) includes exposing an adhesive (10) secured to the tooth (14) to incoherent actinic radiation that reduces a bond strength of at least a portion of the adhesive (10) and separating the orthodontic appliance (12) from the tooth (14) at the portion of the adhesive (10) having reduced bond strength.
A method of producing a custom dental anchor application appliance may be provided. The appliance may be for mounting one or more anchors to teeth of a patient. The appliance may be for use in orthodontic aligner treatment. The method may include forming a dental appliance. The forming may be done using a three-dimensional printing approach. The appliance may include a body. The body may include at least one anchor-locating area. The anchor-locating area may be shaped to conform to a mounting area on a surface of a tooth. The appliance may include a receiving structure. The receiving structure may be configured to removably support a dental anchor. The dental anchor may be of a predefined configuration in a fixed position and orientation relative to the body.
A61C 7/16 - BracketsFixing brackets to teeth specially adapted to be cemented to teeth
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
An orthodontic bracket is described and which includes a base member defining an archwire slot having an opening, and at least one projection extending outwardly from the base member; a ligating slide moveable between a first position which is clear of the archwire slot, and second position where the ligating slide projects over the opening of the archwire slot; and a biasing member borne by the ligating slide, and resiliently cooperating with the projection, and wherein the biasing member has a first portion which receives the projection when the ligating slide is in the first position, and a second portion which receives the projection when the ligating slide is in the second position.
Methods for orthodontic treatment planning include modifying a digital picture of a patient based on a tooth model produced during simulated orthodontic treatment after movement of at least one model tooth to produce a modified digital image depicting the at least one model tooth after movement. The method includes matching and morphing information from the digital picture into the modified digital image. Modifying includes matching a model tooth in the T1 model to a tooth in the digital picture and morphing that information into the modified digital image. Morphing may include projecting a model tooth in the T1 model to an image plane of the digital picture and projecting a model tooth from an intermediate T model to the image plane. Parameterization of the projections of each model may be used to develop a pixel correspondence map, which is usable during rendering of a tooth in the modified digital image.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/62 - Methods or arrangements for recognition using electronic means
G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
G06T 11/60 - Editing figures and textCombining figures or text
A computational device determines a representation of one or more anatomical features, and based on the determined representation of the one or more anatomical features, a three-dimensional model is oriented in a three-dimensional space in an anatomically accurate manner. Thereafter, an orthodontic device design is created using the oriented three dimensional model and an orthodontic device is manufactured based at least in part on the orthodontic device design.
An imaging system, a method for imaging an object of interest, and an image of the object of interest. In one embodiment, an imaging system includes a channel configured to receive information from an object of interest, a 3DSS sub-system configured to capture information from the object of interest and generate at least one of 3D surface data or 3D position data based on the information captured by the 3DSS sub-system, and an OCT sub-system configured to perform a line scan of light reflected from the object of interest, generate OCT image data from the line scan, receive the at least one of the 3D surface data or the 3D position data, and generate one or more OCT images using the OCT image data and the at least one of the 3D surface data or the 3D position data.
An orthodontic bracket axis indicator for use with an orthodontic bracket including a long slot intersecting with an archwire slot having a base surface and first and second opposed slot surfaces extending from the base surface includes an insert having first and second elongate cross members having first and second top surfaces, respectively, and arranged generally perpendicular to each other such that, when viewed from above, the insert has a generally cruciform shape. First and second grooves extend along the first and second top surfaces of the first and second cross members, respectively, and are each configured to receive an orthodontic tool. The first cross member is configured to be received by the archwire slot and the second cross member is configured to be received by the long slot in order to provide an interference fit between the insert and the orthodontic bracket.
An orthodontic adhesive includes components capable of allowing easy debonding of an orthodontic device from a patient's tooth. The adhesive includes an engineered marine mussel protein. The adhesive may include at least one photocleavable moiety. The adhesive is applied in one or more individual layers. One of the components of the adhesive is capable of binding to a tooth and the other component may be capable of binding to an orthodontic device. A method of adhering an orthodontic device to a tooth includes applying a layer of an orthodontic adhesive to either the tooth or the orthodontic device or the tooth and the orthodontic device and affixing the orthodontic device to the tooth with the orthodontic adhesive situated between the tooth and the orthodontic device. The engineered marine mussel protein includes one or more catechol moieties or one or more derivatives of a catechol moiety.
An orthodontic adhesive (10) includes components capable of allowing easy debonding of an orthodontic device (12) from a patient's tooth (14). The adhesive includes an engineered marine mussel protein. The adhesive (10) may include at least one photocleavable moiety. The adhesive (10) is applied in one or more individual layers. One of the components of the adhesive (10) is capable of binding to a tooth and the other component may be capable of binding to an orthodontic device (12). A method of adhering an orthodontic device (12) to a tooth (14) includes applying a layer of an orthodontic adhesive (10) to either the tooth (14) or the orthodontic device (12) or the tooth (14) and the orthodontic device (12) and affixing the orthodontic device (12) to the tooth with the orthodontic adhesive (10) situated between the tooth (14) and the orthodontic device (12). The engineered marine mussel protein includes one or more catechol moieties or one or more derivatives of a catechol moiety.
An orthodontic adhesive (10) includes components capable of allowing easy debonding of an orthodontic device (12) from a patient's tooth (14). The adhesive includes an engineered marine mussel protein. The adhesive (10) may include at least one photocleavable moiety. The adhesive (10) is applied in one or more individual layers. One of the components of the adhesive (10) is capable of binding to a tooth and the other component may be capable of binding to an orthodontic device (12). A method of adhering an orthodontic device (12) to a tooth (14) includes applying a layer of an orthodontic adhesive (10) to either the tooth (14) or the orthodontic device (12) or the tooth (14) and the orthodontic device (12) and affixing the orthodontic device (12) to the tooth with the orthodontic adhesive (10) situated between the tooth (14) and the orthodontic device (12). The engineered marine mussel protein includes one or more catechol moieties or one or more derivatives of a catechol moiety.
A storage and dispensing system (1 0) of orthodontic brackets includes a package (22, 200, 220, 230) with an orthodontic bracket (24, 240). The package (22, 200, 220, 230) has a base (34, 202, 222, 232) and a cap (32, 224, 234). The base (34, 202, 222, 232) has a post (36, 238) on which the orthodontic bracket (24, 240) is secured. The cap (32, 224, 234) includes a blind bore (57) such that the cap (32, 224, 234) surrounds the post (36, 238) and the orthodontic bracket (24, 240). The cap (32, 224, 234) and the base (34, 202, 222, 232) are configured to form a moisture tight seal therebetween. The orthodontic bracket (24, 240) may be a precoated orthodontic bracket. The base (34, 202, 222, 232) or the cap (32, 224, 234) includes an o-ring (48). The package is releasably secured to a strip and the strip includes an RFID tag. The package (22, 200, 220, 230) is releasably secured to a strip (26). The strip (26) includes an RFID tag (38). A method of manufacturing orthodontic brackets includes placing a predetermined amount of adhesive on an orthodontic bracket (24, 240), positioning the precoated orthodontic bracket on the base (34, 202, 222, 232), and placing the cap (32, 224, 234) over the precoated orthodontic bracket and into contact with the base (34, 202, 222, 232).
A storage and dispensing system of orthodontic brackets includes a package with an orthodontic bracket. The package has a base and a cap. The base has a post on which the orthodontic bracket is secured. The cap includes a blind bore. The cap surrounds the post and the orthodontic bracket. The cap and the base are configured to form a moisture tight seal therebetween. The orthodontic bracket may be a precoated orthodontic bracket. The base or the cap includes an o-ring. The package is releasably secured to a strip and the strip includes an RFID tag. The package is releasably secured to a strip. The strip includes an RFID tag. A method of manufacturing orthodontic brackets includes placing a predetermined amount of adhesive on an orthodontic bracket, positioning the precoated orthodontic bracket on the base, and placing the cap over the precoated orthodontic bracket and into contact with the base.
A dental aligner and methods and systems for manufacturing the dental aligner. A boundary contour is defined in a two-dimensional space based on an edge of a model aligner in a ruler disc. The boundary contour may be measured on a grid in which the model aligner is formed. The information pertaining to the boundary contour in the model is transferred to a flat workpiece. The boundary contour may follow the patient's gingival margin. A trench is formed in the flat workpiece based on the boundary contour measured in the model aligner. The flat workpiece including the trench is deformed. Deforming the trench forms at least a portion of the edge of the dental aligner and may include a trim boundary. The aligner may be separated from the workpiece at the trim boundary. The model aligner and dental aligner may vacuum thermoformed from the same mold.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
B29C 51/10 - Forming by pressure difference, e.g. vacuum
A method and system for generated an optimized placement of orthodontic brackets on a set of teeth with the goal of smoothing the orthodontic archwire associated with the brackets. The optimized placement takes into account at least one constraint, such as minimum height of the brackets or minimum distance from the center of the tooth. Generating the optimized placement may take the form of iteratively re-positioned the brackets on the underlying teeth to derive the most optimal placement within the bounds of the given constraints.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
G05B 19/4097 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
65.
SYSTEMS AND METHODS OF IDENTIFYING AND TRACKING DENTAL MOLDS IN AUTOMATED ALIGNER FABRICATION SYSTEMS
An aligner fabrication system (30) combines design data and material to form a plurality of dental molds (16) with which a plurality of aligners (60) is formed. The aligner fabrication system (30) includes a build assembly (10) that defines a build surface (14) on which the dental molds (16) are formed. The build assembly (10) is constructed of a plurality of individual build platforms (12) that are removably coupled together. Each individual build platform (12) is associated with an identification entity (20). The dental molds (16) are formed on the build surface (14). One dental mold (16) is formed on one individual build platform (12). The design data associated with the one dental mold (16) is linkable to the identification entity (20) on the one individual build platform (12).
G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
66.
Systems and methods of identifying and tracking dental molds in automated aligner fabrication systems
An aligner fabrication system combines design data and material to form a plurality of dental molds with which a plurality of aligners are formed. The aligner fabrication system includes a build assembly that defines a build surface on which the dental molds are formed. The build assembly is constructed of a plurality of individual build platforms that are removably coupled together. Each individual build platform is associated with an identification entity. The dental molds are formed on the build surface. One dental mold is formed on one individual build platform. The design data associated with the one dental mold is linkable to the identification entity on the one individual build platform.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A light assisted orthodontic device (10) includes at least one material layer (30) formed to be positioned over one or more teeth; a light source (20) coupled to the at least one material layer (30), the light source (20) being configured to emit light having a wavelength of 700 nm to 1500 nm; and a power source (24) configured to power the light source (20). A method for making a light assisted orthodontic device (10) includes forming a first material layer (30) shaped to be positioned over one or more teeth; and coupling a light therapy array (28) to the first material layer. A method of orthodontic treatment includes positioning the device (10) over one or more teeth, the device (10) applying a corrective pressure to the one or more teeth; and emitting light having a wavelength of 700 nm to 1500 nm to the one or more teeth.
Systems and methods are described for identifying a sub-gingival surface of a tooth in volumetric imagery data. Shape data is received from a surface scanner and volumetric imagery data is received from a volumetric imaging device. The shape data of the super-gingival portion of a first tooth is registered with the volumetric imagery data of the super-gingival portion of the first tooth to obtain a registration result. At least one criterion is then determined for detecting a surface of the first tooth in the volumetric imagery data of the super-gingival or the sub-gingival portion using the registration result. The surface of the sub-gingival portion of the first tooth is detected in the volumetric imagery data using the at least one criterion.
G06T 7/187 - SegmentationEdge detection involving region growingSegmentationEdge detection involving region mergingSegmentationEdge detection involving connected component labelling
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
70.
METHODS AND SYSTEMS FOR REGISTERING MULTIPLE DENTAL IMAGERIES
A method for registering imageries (30, 50) of a tooth includes integrating different imageries (30, 50) to roughly register them. The method includes cross-sectioning the imageries (30, 50) through the tooth and moving one imagery (30, 50) relative to another one (50, 30). Moving includes at least one of rotating and translating an imagery (30, 50) and may be relative to a characteristic feature (118) of the tooth (66) in the imagery (140). The tooth may be an anterior tooth, such as an incisor (62). Cross-sectioning may be at the characteristic feature (118) in a sagittal plane (124), a transverse plane (128), and a coronal plane (126). And, moving may include at least one of rotating and translating the imagery (30, 50) on a plane-by-plane basis in each plane (124, 126, 128). The method may include evaluating an error in the position of the imageries (30, 50) and repeating moving the imageries (30, 50). A dental registration system (200) includes a first imaging system (14, 40) and a second imaging system (14, 40) to capture different imageries (30, 50) of the teeth.
An orthodontic bracket is described and which includes a base member defining an archwire slot having an opening, and at least one projection extending outwardly from the base member; a ligating slide moveable between a first position which is clear of the archwire slot, and second position where the ligating slide projects over the opening of the archwire slot; and a biasing member borne by the ligating slide, and resiliently cooperating with the projection, and wherein the biasing member has a first portion which receives the projection when the ligating slide is in the first position, and a second portion which receives the projection when the ligating slide is in the second position.
An imaging system, a method for imaging an object of interest, and an image of the object of interest. In one embodiment, an imaging system includes a channel configured to receive information from an object of interest, a 3DSS sub-system configured to capture information from the object of interest and generate at least one of 3D surface data or 3D position data based on the information captured by the 3DSS sub-system, and an OCT sub-system configured to perform a line scan of light reflected from the object of interest, generate OCT image data from the line scan, receive the at least one of the 3D surface data or the 3D position data, and generate one or more OCT images using the OCT image data and the at least one of the 3D surface data or the 3D position data.
An imaging system, a method for imaging an object of interest, and an image of the object of interest. In one embodiment, an imaging system (105) includes a channel (126) configured to receive information from an object of interest (110), a 3DSS sub-system (135) configured to capture information from the object of interest (110) and generate at least one of 3D surface data or 3D position data based on the information captured by the 3DSS sub-system (135), and an OCT sub-system (140) configured to perform a line scan of light reflected from the object of interest (110), generate OCT image data from the line scan, receive the at least one of the 3D surface data or the 3D position data, and generate one or more OCT images using the OCT image data and the at least one of the 3D surface data or the 3D position data.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
A61C 19/04 - Measuring instruments specially adapted for dentistry
G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated
76.
Aesthetic orthodontic bracket and method of making same
An orthodontic bracket for coupling an archwire with a tooth includes a bracket body that has an archwire slot adapted to receive the archwire. A movable member is engaged with the bracket body and is movable between an opened position and a closed position. The bracket body and movable member are made from a transparent or translucent ceramic for improved aesthetics. The bracket body may include one or more stop surfaces that limit movement of the moveable member in the gingival direction. The bracket body may include a support surface that is positioned lingually of a labial edge of the archwire slot. The moveable member may include a bracket-engaging portion having a first surface confronting the bracket body and a slot-covering portion having a second surface confronting the archwire slot, the first and second surfaces being offset from one another.
A method for continuously evaluating the effectiveness of debridement of a root canal of a tooth, the tooth having an open access cavity and an apex end, includes delivering a fluid to the open access cavity of the tooth, evacuating the fluid near the apex end of the tooth such that the fluid flushes most of the root canal before being evacuated, and continuously evaluating the evacuated fluid for at least one of a presence of debris, a concentration level of the debris, or a type of the debris. An apparatus for use in debriding a root canal of a tooth includes a microcannula or a macrocannula configured to evacuate a fluid in the root canal, and a sensing mechanism fluidically coupled to the microcannula or the macrocannula, the sensing mechanism configured to continuously sense debris in the evacuated fluid in real time.
A method for continuously evaluating the effectiveness of debridement of a root canal (24) of a tooth (18), the tooth (18) having an open access cavity (25) and an apex end (26), includes delivering a fluid to the open access cavity (25) of the tooth (18), evacuating the fluid near the apex end (26) of the tooth (18) such that the fluid flushes most of the root canal (24) before being evacuated, and continuously evaluating the evacuated fluid for at least one of a presence of debris (86), a concentration level of the debris (86), or a type of the debris (86). An apparatus (10) for use in debriding a root canal (24) of a tooth (18) includes a microcannula (38) or a macrocannula configured to evacuate a fluid in the root canal (24), and a sensing mechanism (14) fluidically coupled to the microcannula (38) or the macrocannula.
The invention generally relates to methods, systems, and computer program products for digital orthodontic setup using a prescribed ideal arch form. The invention may include an imaging system, an orthodontic device production system, and an orthodontic treatment system interconnected by way of a network. The orthodontic treatment system may facilitate manipulating one or more reference teeth into a position by the dental practitioner. The orthodontic treatment system may further facilitate selection of an ideal unit-less arch form and scaling of the ideal unit-less arch form into a scaled ideal arch form to fit the reference teeth. After the selected ideal unit-less arch form is scaled to fit the reference teeth, the remaining teeth are positioned with respect to the scaled ideal arch form, either manually by a dental practitioner or automatically by an alignment algorithm.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
G16H 20/30 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
G16H 70/20 - ICT specially adapted for the handling or processing of medical references relating to practices or guidelines
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
In one embodiment, the present application discloses a photo-cleavable surface binding compound of the Formula I and Formula II: wherein the variables EG, EG1, SP1, SP2, SP3, Ar and BG are as defined herein. In another embodiment, the application discloses a method for forming a coating on a surface of a substrate using the surface binding compound.
In one embodiment, the present application discloses a surface binding compound of the Formula I or Formula II:
wherein the variables EG, EG1, SP1, SP2, SP3, Ar and BG are as defined herein. In another embodiment, the application discloses a method for forming a coating on a surface of a substrate using the surface binding compound of the Formula I or Formula II.
C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
C07C 205/43 - Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by esterified hydroxy groups having nitro groups or esterified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton to carbon atoms of the same non-condensed six-membered aromatic ring or to carbon atoms of six-membered aromatic rings being part of the same condensed ring system
A61K 6/20 - Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
B05D 3/10 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
C07C 205/42 - Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by esterified hydroxy groups having nitro groups or esterified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
C07C 235/06 - Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
C07C 271/16 - Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms
C07F 7/08 - Compounds having one or more C—Si linkages
B05D 3/00 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
C07C 235/20 - Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having at least one of the singly-bound oxygen atoms further bound to a carbon atom of a six-membered aromatic ring, e.g. phenoxyacetamides having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
C07D 217/16 - Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems with radicals, substituted by hetero atoms, attached to carbon atoms of the nitrogen-containing ring other than aralkyl radicals substituted by oxygen atoms
A self-ligating orthodontic bracket includes a bracket body, a slide member, and a resilient member. The slide member is movable relative to the bracket body between an opened position, a first ligating position, and a second ligating position. In the first ligating position and in the second ligating position, a surface of the slide member bounds the archwire slot on a side generally opposite to the base surface to retain the archwire. The resilient member is configured to engage the other of the slide member and the bracket body and has a deformed state for biasing the slide member toward the base surface in at least one of the first and second ligating positions. In the first and second ligating positions, the base surface of the archwire slot and the surface of the slide member are separated by different distances.
An orthodontic bracket for coupling an archwire having a ligature to a tooth includes a bracket body configured to be mounted to the tooth, the bracket body including an archwire slot opened to one side of the bracket body and adapted to receive the archwire therein. At least two tie wings extend from the bracket body, the at least two tie wings each having a tip region and an under tie wing region, and the under tie wing region is configured to receive the ligature. The under tie wing regions each include a curvature in a plane parallel to a longitudinal axis of the archwire slot and extending in the same direction that the archwire slot opens at a location adjacent an outer end of the under tie wing region.
Devices, methods, systems, and computer program products for quantifying the amount of pressure exerted on a tooth or a set of teeth by an aligner. The quantification may be facilitated by a sensor disposed in the aligner and the sensor may be configured to generate an output signal signifying the amount of pressure in response to receiving an input signal. The input signal may be generated by a detection instrument or a computing device. The amount of pressure may be stored in a treatment tracking software and/or treatment tracking database for review and consideration by a treatment professional. The treatment professional may thereafter make decisions about the orthodontic treatment based on quantified amount of pressure on the tooth or set of teeth.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A61C 19/04 - Measuring instruments specially adapted for dentistry
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
90.
Apparatus and method for asymmetrical coast control of an endodontic motor
An apparatus for controlling asymmetrical coasting of an endodontic reciprocating motor includes a controller operatively connected to the endodontic motor. The controller may include a processing unit that is configured to direct the rotation of the endodontic motor in the forward direction for a coast time and configured to direct the rotation of the endodontic motor in the reverse direction for a coast time. The forward coast time is separately calculated from the reverse coast time. A method for asymmetrically coasting a reciprocating endodontic motor includes rotating an endodontic motor in a forward direction and calculating a forward coast time for the forward direction and coasting the endodontic motor in the forward direction for the calculated forward coast time. After coasting the endodontic motor in the forward direction, the endodontic motor is rotated in a reverse direction. The reverse coast time is different than the forward coast time.
H02P 3/06 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
The present invention relates to apparatuses and methods of endodontic treatment. The endodontic treatment system includes an endodontic device for use in endodontic procedures. The endodontic device is coupled to a fluid delivery system and includes an end effector, a first cannula (70), and a second cannula (72). The first cannula (70) and the second cannula (72) are movable relative to one another to an extended position in which the second cannula (72) extends from the first cannula (70). A method for endodontic treatment of a root canal of a tooth includes moving a first cannula (70) and the second cannula (72) relative to one another from a first position to a second position in which the second cannula (72) extends from the first cannula (70) into the root canal and evacuating the irrigant from the root canal with the second cannula (72).
Metal ingots for forming single-crystal shape-memory alloys (SMAs) may be fabricated with high reliability and control by alloying thin layers of material together. In this improved method, a reactive layer (e.g., aluminum) is provided in thin flat layers between layers of other materials (e.g., copper and layers of nickel). When the stacked layers are vacuum heated in a crucible to the melting temperature of the reactive layer, it becomes reactive and chemically bonds to the other layers, and may form eutectics that, as the temperature is further increased, melt homogeneously and congruently at temperatures below the melting temperatures of copper and nickel. Oxidation and evaporation are greatly reduced compared to other methods of alloying, and loss of material from turbulence is minimized.
C22C 9/01 - Alloys based on copper with aluminium as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/08 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
C30B 15/00 - Single-crystal growth by pulling from a melt, e.g. Czochralski method
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
C22C 19/03 - Alloys based on nickel or cobalt based on nickel
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
An orthodontic bracket includes a bracket body, a slide member, and a resilient member. The slide member is slidable relative to the archwire slot. The resilient member is coupled to and is slidable with the slide member. The resilient member is configured to engage a first portion of the bracket body in the opened position and a second portion of the bracket body in the closed position. The second portion is different from the first portion. The resilient member imposes a biasing force on the slide member in the direction of movement toward the archwire slot when the slide member is in the closed position. The resilient member may be configured to impose a biasing force on the slide member in the direction away from the archwire slot when the slide member is at a position intermediate the opened and closed positions.
A set of rules to design an orthodontic appliance for generating an aesthetic smile is maintained in a computational device, where the set of rules is associated with an application that executes in the computational device. At least one measured value is computed from one or more features extracted by processing dental information of a patient. The application generates a parameter to design an orthodontic appliance based on the at least one measured value and the set of rules for generating the aesthetic smile.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A61C 13/34 - Making or working of models, e.g. preliminary castings, trial denturesDowel pins
A61B 1/04 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor combined with photographic or television appliances
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
A dental archwire is provided having a pre-set shape including an elongate, curved length approximating the shape of a dental arch and a rectangular cross-section having a first dimension of 0.013-0.021 inch and a second dimension of 0.018-0.026 inch or a circular cross-section of diameter 0.013 through 0.026 inch over at least a portion of the elongate, curved length. The dental archwire in the pre-set shape comprises a hyperelastic, single crystal shape memory alloy that is free of elemental precipitates and is capable of exhibiting greater than a 10 percent strain recovery, a constant force deflection, negligible stress hysteresis, and a binding force to an orthodontic bracket equal or less than 4 N.
C22F 1/08 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22C 9/01 - Alloys based on copper with aluminium as the next major constituent
An orthodontic bracket includes a bracket body and a ligating slide. The bracket body includes an aperture and an archwire slot. The ligating slide is slidable relative to the archwire slot between an opened position and a first closed position and is pivotable to an angular position in a second closed position. The orthodontic bracket further includes a resilient member that is coupled to the ligating slide and is slidable in the aperture. The ligating slide defines a first height from the base surface having a first value, and in the second closed position, the ligating slide defines a second height from the base surface that is greater than the first value. The bracket body includes a slide support portion having at least one wing extending laterally therefrom. The wing is tapered in thickness. The slide support portion defines a pivot point about which the ligating slide is pivotable.
