A dental paste filling device for filling dental paste in a container without entraining air bubbles is disclosed. The dental paste filling device includes: a paste supply stage serving as a supply source of the dental paste; a paste filling stage where the dental paste is filled in the container; and a supply flow passage connecting the both stages. The paste supply stage comprises: a storage chamber for storing the dental paste; a storage chamber depressurizing and defoaming device for depressurizing the inside of the storage chamber to defoam the dental paste within the storage chamber; and a storage chamber extruding device for extruding the dental paste within the storage chamber towards the supply flow passage. The paste filling stage comprises: a filling chamber having an open/close mechanism; a holder for detachably holding the container inside the filling chamber; a filling chamber deaerating device for depressurizing the inside of the filling chamber to prevent entrainment of air bubbles into the dental paste; and a reception port for introducing the dental paste into the filling chamber. The supply flow passage comprises: an upstream tube connected to the storage chamber; a downstream tube connected to the reception port of the filling chamber, and a discharge control valve disposed between the upstream tube and the downstream tube.
B67D 7/76 - Arrangements of devices for purifying liquids to be transferred, e.g. of filters, of air or water separators
B67D 7/02 - Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
B67D 7/78 - Arrangements of storage tanks, reservoirs or pipe-lines
A dental polishing instrument enabling polishing ranging from mid- to final-finish polishing of a dental restoration to be performed with one dental polishing instrument, as well as being capable of improving the efficiency of the polishing will be provided. A dental polishing instrument includes: a first whetstone layer; and a second whetstone layer, wherein the first whetstone layer and the second whetstone layer are stacked, and each of the whetstone layers includes abrasive grains (A) and a binder (B), and the whetstone layers are separable from each other.
A dental polishing instrument capable of polishing a surface of a dental restoration or a tooth effectively and continuously, without the need to use abrasive agent such as a dental polishing paste, in combination with the dental polishing instrument will be provided. A dental polishing instrument according to the present invention includes: a porous base member (A); and a polishing composition that contains abrasive grains (B) and a water-soluble binder (C), and that is held by the porous base member.
A61Q 11/00 - Preparations for care of the teeth, of the oral cavity or of dentures, e.g. dentifrices or toothpastesMouth rinses
4.
METHOD FOR PRODUCING ACID-REACTIVE GLASS POWDER, ACID-REACTIVE GLASS POWDER OBTAINED BY THE PRODUCTION METHOD, AND DENTAL GLASS IONOMER CEMENT COMPOSITION CONTAINING THE SAME
A method for producing an acid-reactive glass powder, an acid-reactive glass powder obtained by the method, and a dental glass ionomer cement composition comprising the acid-reactive glass powder. The dental glass ionomer cement composition has good mixing property, a sufficient working time, and simultaneously can make the dental glass ionomer cement composition exhibit superior mechanical properties. More specifically, a method for producing an acid-reactive glass powder wherein an acid-reactive glass powder having a range of 2 to 10 μm of a 50% particle size is obtainable by pulverizing a large-particle-size acid-reactive glass powder having a range of 250 to 3000 μm of a 50% particle size in a state where a small-particle-size acid-reactive glass powder having a range of 1 to 5 μm of a 50% particle size coexists.
A spray powder mixture to be sprayed to a tooth surface above or below a gingival margin or into a gingival sulcus and a periodontal pocket by a powder spraying apparatus, the spray powder mixture comprising:
(a) at least one component selected from a group consisting of a saccharide, a sugar alcohol, an amino acid, a phosphate compound, a carbonate compound, and a calcium compound; and
(b) a hydrophobized particulate silica.
A denture base of the present disclosure includes: a base main body; and a plurality of sockets provided in the base main body and each having a concave shape. The plurality of sockets are provided along a shape of the base main body. The base main body includes a socket partition wall provided between adjacent sockets of the plurality of sockets. The socket partition wall is provided with a groove that communicates with the adjacent sockets each other. The plurality of sockets communicate with each other through the groove.
A method includes: acquiring scan data on a tooth; drawing an edge line closed; deleting scan data on the edge of the tooth; disposing data in which multiple plates are disposed at intervals along the edge line while superimposing the data on the scan data; creating a first profile curve and a second profile curve indicating an outline of the scan data across a part deleted in each of sections of the scan data, the sections being taken along the corresponding multiple plates in the data; extending the first profile curve and the second profile curve in a direction of compensating for the scan data on the part deleted in each of the sections of the scan data; and restoring the edge of the tooth based on the first profile curve and the second profile curve that are extended in each of the sections of the scan data.
A data management system comprises: an outsourcer terminal outsourcing a fabrication by an instruction document; an outsourcee terminal receiving outsourcing and/or sub-outsourcing; and a server device. The server device comprises: a data management unit managing a proprietary authority of data stored in a data storage unit; an order container storage unit storing an order container with which data stored in the data storage unit is correlated, for each order created in an order creation unit of the outsourcer terminal and/or the outsourcee terminal; and an order container management unit managing sharing of the order container, based on an instruction from an order container sharing authority management unit of the outsourcer terminal and/or the outsourcee terminal. The server device, for each order, correlates any format of data element stored with the order container, for management.
The present invention provides a dental paste filling device which fills a container with dental paste without entrapment of bubbles. A dental paste filling device according to the present invention comprises: a paste supply stage which serves as a source of supply of dental paste; a paste filling stage in which a container is to be filled with the dental paste; and a supply passage which connects the paste supply stage and the paste filling stage. The paste supply stage has a storage chamber which is for storing the dental paste, a storage chamber pressure reduction and degassing device which reduces pressure in the storage chamber and degasses the dental paste in the storage chamber, and a storage chamber extrusion device which extrudes the dental paste in the storage chamber to the supply passage. The paste filling stage has a filling chamber which is provided with an opening/closing mechanism, a holder which is for detachably holding the container in the filling chamber, a filling chamber degassing device which reduces pressure in the filling chamber and prevents bubbles from being entrapped in the dental paste, and a receiving port through which the dental paste is to be introduced into the filling chamber. The supply passage has an upstream-side tube which is connected to the storage chamber, a downstream-side tube which is connected to the receiving port of the filling chamber, and a discharge control valve which is provided between the upstream-side tube and the downstream-side tube.
A manufacturing method for a prosthetic apparatus for dental purpose according to one aspect of the present invention includes: acquiring scan data of a model that is a reproduction of at least a part of an inside of an oral cavity of a patient; creating shape data of a shaped body for dental purpose on a basis of the scan data; producing a shaped body on a basis of the shape data; covering at least a part of the shaped body and at least a part of a model with film, the shaped body attached to the model; releasing air in a part covered with the film to deform the film and bring the shaped body into close contact with the model; and curing the shaped body in a state where the shaped body is in close contact with the model.
A61C 13/10 - Fastening of artificial teeth to artificial base material, e.g. to palates or to adjacent artificial tooth
A61C 13/34 - Making or working of models, e.g. preliminary castings, trial denturesDowel pins
B29C 64/124 - 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
A hinge cap formed by an injection-molding comprises an inner lid capable of being attached to a container body, a hinge, and an outer lid that is connected to the inner lid by the hinge to open and close the cap. The inner lid includes a claw portion. The outer lid includes a tubular outer wall portion and a plurality of convex portions as undercut portions and a plurality of concave portions. One convex portion and a concave portion adjacent to the one convex portion form an engaging portion capable of being engaged with the claw portion. An adjacent convex portion adjacent to the engaging portion and a concave portion adjacent to the adjacent convex portion form a mold pressing portion.
B65D 47/08 - Closures with discharging devices other than pumps with pouring spouts or tubesClosures with discharging devices other than pumps with discharge nozzles or passages having articulated or hinged closures
B65D 51/18 - Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
14.
POWDER MIXTURE FOR SPRAYING INTO TOOTH SURFACE OR INTO GINGIVAL SULCUS/PERIODONTAL POCKET
This powder mixture, which is for spraying, and for spraying, via a powder spraying device, into supragingival or subgingival tooth surfaces, or into a gingival sulcus and a periodontal pocket, is characterized by comprising: (a) at least one selected from the group consisting of a saccharide, a sugar alcohol, an amino acid, a phosphate compound, a carbonate compound, and a calcium compound; and (b) a hydrophobic fine particle silica.
The present invention provides a dental glass ionomer cement composition which can improve the mixing efficiency of a powder and a liquid to an extent where their powder to liquid ratio can be raised in mechanical mixing without reducing a fluoride-release property, and further expresses a high mechanical property. More specifically, the present invention provides a dental glass ionomer cement composition in which a powder and a liquid are separately packaged in a dental capsule, and the powder and the liquid are used by mixing immediately before their use, wherein the composition comprises (a) a hydrophobized acid reactive glass powder, (b) a polyalkene acid, and (c) water, and is not accompanied by a polymerization reaction upon setting.
A method for manufacturing a denture includes: preparing an artificial tooth and a denture base with a concave socket; applying an adhesive to the concave socket; and embedding the artificial tooth in the concave socket to which the adhesive is applied. A socket groove is defined on an inner surface defining the concave socket. The socket groove extends from a concave bottom surface of the concave socket facing a basal surface of the artificial tooth to a lingual concave side surface of the concave socket. Embedding the artificial tooth in the concave socket includes: forming a discharge hole to discharge the adhesive, the discharge hole being defined at an end of the socket groove on a lingual outer surface of the denture base; and discharging the adhesive from the discharge hole.
The array device of an aspect of the present invention is an array device to be attached to a denture plate and one or more artificial teeth to thereby array the one or more artificial teeth on the denture plate, the array device comprising: a body having one or mere recesses recessed in conformity with crown shapes of the one or more artificial teeth, wherein the body includes one or more positioning portions for positioning the one or more artificial teeth on the denture plate.
A61C 13/103 - Fastening of artificial teeth to artificial base material, e.g. to palates or to adjacent artificial tooth connected to base material by additional connecting member, e.g. knob or bar
A method of fabricating a plate denture, comprises: creating a denture plate having a concave socket formed thereon and a vertical groove formed on a bottom surface of the socket; applying an adhesive material to the socket and the vertical groove; embedding a reinforcing structure in the vertical groove to which the adhesive material is applied; and arranging an artificial tooth in the socket to which the adhesive material is applied.
A61C 13/103 - Fastening of artificial teeth to artificial base material, e.g. to palates or to adjacent artificial tooth connected to base material by additional connecting member, e.g. knob or bar
A partial connection full arch artificial connects and fixes in an appropriate occlusal relationship in advance and appropriately defines a region that should be separated and a region that may be standardized, appropriately defines a combination of regions of adjacent surfaces constituting a contact region, an angle of the denture with respect to the virtual occlusal plane, and an area thereof in a region where artificial teeth are brought into contact with each other.
The present invention relates to a novel diisocyanate-based radical polymerizable silane coupling compound having an urethane bond and a medical and/or dental curable composition comprising the same. The present invention provides a novel silane coupling agent that imparts high affinity to a radical polymerizable monomer, thereby imparting high mechanical strength and durability when used for a medical and/or dental curable composition, and an inorganic filler surface-treated with the novel silane coupling agent and a novel medical and/or dental curable composition.
The present invention provides a photopolymerization initiator capable of exhibiting excellent sensitivity to photopolymerization and ensuring a sufficient pot life under ambient light, and a dental photocurable composition comprising the photopolymerization initiator. More specifically, the present invention provides a photopolymerization initiator (c) used in a dental photocurable composition, comprising: (c-1) a photosensitizer, (c-2) a polymerization accelerator, and (c-3) an aryliodonium salt represented by the formula (1):
wherein, R1 represents an organic group bonded to I, R2 represents an alkyl group in which a part of hydrogen atoms is substituted with a flourine atom, and b represents the number thereof which is an integer of from 1 to 5, and a dental photocurable composition comprising the photopolymerization initiator.
A dental prosthetic device design method according to an aspect of the present invention is a method for designing a dental prosthetic device by a computer, the method including: acquiring scan data of maxillary and mandibular dentitions; determining a restoration site of a tooth, based on the scan data; reading out plural pieces of attrition shape data of a tooth related to the restoration site, from maxillary and mandibular tooth shape data sets having plural pieces of attrition shape data with different degrees of attrition for each tooth of the maxillary and mandibular dentitions; selecting attrition shape data from among the plural pieces of attrition shape data, in accordance with the degrees of attrition of the maxillary and mandibular dentitions; placing the selected attrition shape data at the restoration site; and creating shape data of a dental prosthetic device from the attrition shape data placed at the restoration site.
The present invention relate to a novel silane coupling agent and a medical and/or dental curable composition comprising the same. It is an object of the present invention to provide a novel silane coupling agent that imparts high affinity to a radical polymerizable monomer, thereby imparting high mechanical strength, flexibility and durability when used for a medical and/or dental curable composition, and an inorganic filler surface-treated with the novel silane coupling agent and a novel medical and/or dental curable composition. A silane coupling agent including repeating units such as a urethane bond and polyethylene glycol (ether bond) at a specific position is used.
A61K 6/887 - Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C08F 230/08 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
C08L 33/02 - Homopolymers or copolymers of acidsMetal or ammonium salts thereof
C09C 3/12 - Treatment with organosilicon compounds
C08F 2/48 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
24.
POST-CURE METHOD AFTER STEREOLITHOGRAPHY OF 3D PRINTER
A method for manufacturing a prosthetic device according to one aspect of the present invention is a method for manufacturing a dental prosthetic device, the method comprising: an acquisition step for acquiring scan data on a model that reproduces at least a part of the patient's oral cavity; a shaping data creation step for creating shaping data on a dental shaped body, on the basis of the scan data; a shaped body manufacturing step for manufacturing a shaped body on the basis of the shaping data; a coating step for attaching the shaped body to the model and covering, with a film, at least a part of the shaped body and the model; an exhaust step for deforming the film by exhausting air from the part covered with the film, and bringing the shaped body into close contact with the model; and a curing step for curing the shaped body, in a state where the shaped body is in close contact with the model.
B29C 69/02 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor of moulding techniques only
B29C 64/124 - 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
B29C 64/129 - 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 present invention pertains to a radical polymerizable silane coupling compound having a urethane bond and using a new diisocyanate as a substrate, and a medical/dental curable composition containing said compound and said substrate. Provided are: a new silane coupling agent that provides high affinity to a radical polymerizable monomer having a urethane group, thereby providing high mechanical strength and durability when being used in the medical/dental curable composition; an inorganic filling agent subjected to surface treatment by the new silane coupling agent; and a new medical/dental curable composition.
An injector comprises a cylindrical barrel including a discharge port, a seal body coming into close contact with an inner circumferential surface of the barrel, a plunger for pushing and moving the seal body to the discharge port side of the barrel, and a stopper disposed on one of the barrel and the plunger and coming into elastic contact with the other in a radial direction of the barrel.
An injector comprises a cylindrical barrel, a movable body housed in the barrel, and a plunger coming into separable contact with the movable body. The movable body includes a main body having an outer diameter smaller than an inner diameter of the barrel, a disk-shaped seal body disposed on the main body and including an outer circumferential end brought into close contact with an inner circumferential surface of the barrel, and at least one projecting portion projecting from the main body toward the inner circumferential surface of the barrel. A distance from a central axis of the movable body to a leading end of the at least one projecting portion is smaller than a half of an outer diameter of the seal body.
To provide a pair of maxillary and mandibular coupled artificial tooth sets applicable to alveolar ridge shapes of an unspecified large number of edentulous patients and having all the parts of 14 teeth coupled into an ideal arch shape and in an ideal maxillomandibular occlusal contact relationship. The present invention provides a pair of maxillary and mandibular coupled artificial tooth sets clearly defining an arrangement region of all parts at the time of arrangement in virtual three-dimensional coordinates, a contact relationship between maxillary and mandibular artificial teeth, and a harmonizing contact/gliding relationship at the time of movement on a mean-value articulator. This enables provision of a high-quality complete denture in which an occlusal relationship required for a complete denture can be established in a short time regardless of a skill of a technician and a difference in shape of an alveolar ridge of an edentulous patient.
The present invention relate to a novel silane coupling agent and a medical and/or dental curable composition comprising the same. It is an object of the present invention to provide a novel silane coupling agent that imparts high affinity to a radical polymerizable monomer, thereby imparting high mechanical strength, flexibility and durability when used for a medical and/or dental curable composition, and an inorganic filler surface-treated with the novel silane coupling agent and a novel medical and/or dental curable composition. A silane coupling agent including repeating units such as a urethane bond and polyethylene glycol (ether bond) at a specific position is used.
A61K 6/887 - Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C08F 230/08 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
C09C 3/12 - Treatment with organosilicon compounds
C08F 2/48 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
30.
DEODORANT COMPOSITION COMPRISING ION SUSTAINED RELEASE GLASS
Provided is a deodorant composition comprising (a) water and (b) an ion sustained release glass, characterized in that the ion sustained release glass (b) sustainedly releases one or more kinds of mono- to tetravalent ions.
An auxiliary instrument according to the present invention is an auxiliary instrument for dental use used as a reference of alignment for creating three-dimensional intraoral image data by connecting a plurality of pieces of three-dimensional image data obtained by three-dimensionally measuring an inside of an oral cavity, the auxiliary instrument including a sheet portion having a first surface and a second surface opposed to the first surface, and a plurality of identification portions formed in a thickness direction (Z direction) of the sheet portion from the first surface of the sheet portion, each of the plurality of identification portions having a three-dimensional shape configured to be identified.
G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
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
32.
Method of estimating and restoring abutment tooth form changed by scanning and program thereof
A method of estimating and restoring includes: determining a temporary finish line having multiple points on scan data as an imaginary boundary line between a formed portion and an unformed portion of the abutment tooth or abutment tooth model; deleting the scan data including the temporary finish line in an edge portion of the abutment tooth or abutment tooth model; extending, in a portion in which the scanned data is deleted, a crown-side temporary finish line and a root-side temporary finish line in directions supplementing the deleted portion of the scan data, respectively; and estimating and restoring the finish line of the edge portion which is formed on the outer side than the edge portion of the deleted scan data based on the extended crown-side temporary finish line and the extended root-side temporary finish line.
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
A mixing container for mixing multiple materials comprises a container body in which multiple storage chambers are formed in a storage part by a partition wall that is a raised portion of a wall surface forming the storage part, and a lid member attached to the container body such that the multiple storage chambers are separately sealed; the partition wall is configured to be deformable into a concave part recessed in a movement direction of the partition wall through movement in a direction from the lid member toward the container body with a circumferential edge of the storage part sealed to the lid member; and when the partition wall is deformed into the concave part, the multiple storage chambers are deformed into one storage chamber.
B65D 81/32 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
34.
Dental curable composition having high mechanical strength
the ratio by weight of (a1):(a2)+(a3) ranges from 1:1 to 9:1, the number of hydroxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a2), and the number of carboxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a3).
The present invention provides a dental hydraulic temporary sealing material composition on which a protection of tooth substance, such as tooth substance strengthening and control of secondary dental caries, can be expected by sustained-releasing various ions including a fluoride ion, while having a high initial setting ability. More specifically, the present invention provides a dental hydraulic temporary sealing material composition comprising 65.0% to 85.0% by mass of component (1): a hydraulic inorganic powder; 10.0% to 25.0% by mass of component (2): an organic solvent; 3.0% to 15.0% by mass of component (3): a resin; and 0.01% to 10.0% by mass of component (4): an ion sustained-release glass.
A dental conditioning composition that enhances the adhesiveness of any dental material for a tooth surface by suppressing any excessive demineralization for the tooth surface and improving the polymerization activity of a dental adhesive composition by causing a polymerization catalyst included in the dental conditioning composition of the present invention to remain on the tooth surface. A dental conditioning composition having a gel character, that includes a polymerization catalyst, an acidic compound, water, and a thickening agent, and whose pH (the hydrogen ion exponent) is in a range from 0.1 to 0.9.
The present invention relates to a dental curing composition to restore a lost portion of a tooth generated due to dental caries, tooth fracturing, etc. The dental curing composition has packability suitable for restoring a posterior tooth; has a paste character of avoiding stickiness to a filling instrument; has excellent shaping properties; has very little paste character over time; and has a low polymerization shrinkage property. The dental curing composition comprises: (a) a matrix resin whose viscosity at 25° C. is 10,000 to 17,000 mPa·s, (b) an organic-inorganic composite filler, (c) an inorganic filler, and (d) a polymeric initiator.
An object of the present invention is to provide a dental polishing instrument that causes no clogging, that prevents occurrence of any secondary flaw, that is excellent in the polishing property, and that can provide high gloss in a short time period, for a dental prosthetic appliance difficult to polish. Another object thereof is to provide a dental polishing instrument that enables easy discharge of polishing sludge while that simultaneously shows sufficient strength. A dental polishing instrument according to the present invention can suppress clogging and occurrence of any secondary flaw due to the polishing sludge and can efficiently polish by forming a polishing abrasive grain layer including polishing abrasive grains and a resin material, into protrusions on the surface of a base material thereof and by disposing the protrusions on the base material.
An occlusal wear evaluation apparatus capable of quantitatively evaluating an occlusal wear of a used denture reads three dimensional data of the denture before use and three dimensional data of the denture after use. The apparatus calculates a difference in a set value of an articulator allowing a maxillary dental arch and a mandibular dental arch of the denture to occlude between the denture before use and the denture after use, by way of simulating movements of a jaw in the articulator with the three dimensional data of the denture before use and the three dimensional data of the denture after use, and indicates the calculated difference.
A61C 19/05 - Measuring instruments specially adapted for dentistry for determining occlusion
A61C 11/00 - Dental articulators, i.e. for simulating movement of the temporo-mandibular jointsArticulation forms or mouldings
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)
Provided are opaque materials exhibiting a good adhesive strength and a good color tone reproduction comparable with natural dental crowns as well as having a good operability. In addition, the opaque materials may exhibit a stain-resistance property in rebuilding-up a dental composition on the opaque materials in a cured form with a metal instrument. Further, the opaque materials may exhibit a good color tone reproduction comparable with natural dental crowns even if a dental membrane is thinly formed from the opaque metals. The dental membrane is formed from a first opaque layer and a second opaque layer, wherein the first opaque layer contains a filler of indefinite-shape particles and the second opaque layer contains a filler of spherical-shape particles, and wherein the first opaque layer is formed on a metal base and the second opaque layer is formed on the first opaque layer.
An artificial teeth packaging container includes an artificial teeth accommodating portion for fixing a plurality of continuously arranged artificial teeth detachably, and holding an arrangement position relation with an adjacent artificial teeth and an arrangement position relation with an upper or lower artificial molar teeth, in which the artificial teeth accommodating portion covers the plurality of artificial teeth from an occlusal plane in a state exposed around a cervical portion.
The invention enables artificial molar teeth to be arranged at appropriate positions according to the oral cavity environment of each patient without requiring advanced techniques or experience. The artificial molar teeth have maxillary molar teeth and mandibular molar teeth arranged so as to form a pair on denture bases to be mounted on upper and lower jaws in an oral cavity, in which one cusp out of the cusps of the maxillary molar teeth and the mandibular molar teeth is engaged with a fossa of the antagonist, and at least one of the other cusps is engaged with a groove of the antagonist.
An artificial tooth where an occlusal surface is formed by grinding has a reference point that represents a position and an angle of the artificial tooth when an occlusal surface of the artificial tooth is obtained by an occlusal-surface form measuring apparatus. The reference point is a convexed spherical surface or a concaved spherical surface arranged on the occlusal-surface. The spherical surface has three or more reference points. The convexed spherical surface is fit to the concaved spherical surface when the maxillary artificial tooth and mandibular artificial tooth are occluded. The occluding portion of the artificial tooth has a grinding portion.
Provided is a dental composition comprising a first largest group of particles and resin matrix, wherein the first largest group consists of particles whose particle size ranges from 0.7 to 1.5 times the representative particle size of the first largest fraction in a population of particles included in the composition whose particle size ranges from 110 to 1000 μm; and wherein the ratio of the number of particles included in the first largest group to the number of particles whose particle size ranges from 0.5 to 2.0 times the representative particle size of the first largest fraction is equal to or more than 0.8.
An occlusion evaluation apparatus capable of evaluating a masticatory ability depending on an occlusal geometry of teeth without actually used by a human subject, reads three dimensional data of geometries of maxillary molar teeth 1, 2, 3, 4 and mandibular molar teeth 5, 6, 7, 8, and specifies a geometry of a fluxion space Va defined by a plane Sa which includes two adjacent contact points Pa between the maxillary molar teeth 1, 2, 3, 4 and mandibular molar teeth 5, 6, 7, 8 and which is perpendicular to the occlusal plane, the occlusal surfaces of the maxillary molar teeth 1, 2, 3, 4, and the occlusal surfaces of the mandibular molar teeth 5, 6, 7, 8.
There is provided a dental composition comprising at least one kind of filler and resin matrix, wherein the at least one kind of filler comprises a population of particles, wherein the population of particles has an average particle size from 110 to 500 μm, the maximum particle size of the population of particles is less than 1.4 times the average particle size, and the D30 of particle size distribution of the population of particles is no less than 0.9 times the average particle size.
The present invention relates to a color adapting composition used for coloring and color adapting porcelain for ceramic crown such as dental restorations and prosthetics, and aluminosilicate glass appropriate for using in a color adapting composition. More specifically, a color adapting composition for dental porcelains are prepared by blending two or more kinds of glass frits having different sintering temperatures from each other and an inorganic pigment or a colored glass obtained by previously dispersing inorganic pigments in glass.
C03C 8/22 - EnamelsGlazesFusion seal compositions being frit compositions having non-frit additions containing two or more distinct frits having different compositions
C03C 3/091 - Glass compositions containing silica with 40% to 90% silica by weight containing boron containing aluminium
49.
Method for calculating grinding portion of pre-grinding denture
A jaw-relation reproduction condition is determined by measuring a jaw movement of a patient, and reproducing a jaw state of the patient on an occlusion-state reproducing apparatus in accordance with the jaw-relation reproduction condition. Dentures are arranged on the apparatus in accordance with the jaw-relation reproduction condition to prepare pre-grinding dentures. Denture data with reference points which is three-dimensional image data containing reference points that represents a positional relationship between the jaw-relation reproduction condition and the dentures and an occlusal surface of the dentures. An occlusion state of the denture data with the reference points is reproduced by using the jaw-relation reproduction condition on a three-dimensional image. Grinding data of a grinding portion is determined under a dynamic condition or set condition from a portion surrounded by an image of upper and lower jaws on the three dimensional image in a reproduced occlusal state.
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)
Occlusal-surface shape data and occlusal-surface position data of dentures are acquired on a dentist side, and the occlusal-surface shape data and the occlusal-surface position data are then transmitted to a grinding data provider side. Maxillomandibular occlusal state data is reproduced from the occlusal-surface shape data and the occlusal-surface position data on the grinding data provider side. A maxillomandibular occlusal adjustment portion is determined by changing a maxillomandibular occlusal vertical dimension on the grinding data provider side. Cutting data including the maxillomandibular occlusal adjustment portion and the occlusal-surface position data is prepared on the grinding data provider side, and the cutting data is transmitted to the dentist side. An occlusal adjustment is carried out on the dentist side by cutting the dentures by a grinding machine based on the cutting data.
A denture grinding machine includes: a denture-holding table for holding dentures; a grinding tool for grinding the dentures held on the denture-holding table; a main body for holding the grinding tool; a moving mechanism for causing relative movement between the denture-holding table and the main body; and a driving mechanism for relatively driving the main body and the denture-holding table. The moving mechanism moves relatively the denture-holding table and the main body in three-dimensional coordinate directions based on grinding portion data, and the grinding tool performs grinding of the denture occlusal surface from a direction perpendicular to the occlusal surface.
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)
52.
Artificial nail composition having improved adhesion property
An object of the present invention is to provide an artificial nail composition which can improve adhesion between a natural nail and an artificial nail, and also can suppress exfoliation or detachment.
(c) a radical polymerization initiator.
The present invention provides an antibacterial artificial nail composition which can form a cured article having an antibacterial effect by applying the composition on a surface of a natural nail or an artificial nail and polymerizing the composition, using an artificial nail technique of forming a cured article on a natural nail or an artificial nail.
Disclosed is an antibacterial artificial nail composition comprising (A) a compound having at least one radical polymerizable unsaturated double bond and an antibacterial group in the molecule and/or (B) an antibacterial filler, (C) a compound having at least one radical polymerizable unsaturated double bond in the molecule, and (D) a polymerization initiator.
A61K 8/81 - Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
A61Q 17/00 - Barrier preparationsPreparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
54.
Chemicals mixing container with elastic partition wall
A chemicals mixing container includes: a cylinder (8) having a tubular shaped outer tube (10), and an end wall (11) which seals one end of the outer tube; an elastic partition wall (12) placed inside the outer tube to define a mixing chamber (5) within the cylinder; and an ejection auxiliary member (13) placed inside the outer tube and outside the mixing chamber, and which has an end face swollen toward the mixing chamber and moreover which is enabled to press the elastic partition wall against the end wall. The chemicals mixing container is enabled to reliably mix a liquid material and a powder material together and discharge a mixture (18) of the liquid material and the powder material without waste.
It is intended to provide artificial teeth designed to easily enable bilateral balanced occlusion with less grinding adjustment. According to the present invention, angles formed by occlusal facets of the artificial teeth with an occlusal plane are suitably set. An artificial tooth for maxillary central incisor, for example, has a protrusive facet and a retrusive facet on an incisal edge thereof. Of angles formed by the protrusive facet with the occlusal plane, the angle in cross section along a sagittal plane is 22.0° to 25.5°, and the angle in cross section along a coronal plane is 1.5° to 6.5°. Of angles formed by the retrusive facet with the occlusal plane, the angle in cross section along the sagittal plane is 20.5° to 23.0°, and the angle in cross section along the coronal plane is 1.5° to 6.5°.
Artificial teeth of upper and lower jaws, allowing easy operation by clarifying the three-dimensional positional relation of cusp tips and pits to contact with each other in occlusion. Each pair of artificial teeth may include cusp tips and pits, and the positional relation of the cusp tips and pits are set appropriately.
(c) a pigment and/or a dye, wherein a color tone thereof is a cyan color based on three subtractive primary colors, or a color tone thereof is a magenta color based on three subtractive primary colors, or a color tone thereof is a yellow color based on three subtractive primary colors, and a dental color material set using the dental coloring material compositions in combination.
The present invention provides an artificial nail composition which can easily impart a special appearance to the tip of the finger, and which is an artificial nail material coated on a natural or artificial nail, and is used by coating on the surface of a natural or artificial nail followed by polymerization and, more particularly, an artificial nail composition which is vivid and has a natural color tone having a transparent sensation, that cannot be achieved by a conventionally used artificial nail composition containing an organic and/or inorganic colorant utilizing absorption and/or a scattering phenomenon of light, and imparts special appearance by an interference color.
The present invention relates to a dental adhesive primer composition for use in dental fields employed to bond dental materials, such as restoration materials, dental crown materials, prosthetic materials, esthetic materials, orthodontic materials, preventive materials, core build-up materials and root canal materials, to ceramics, metals, resins, composite resins, glass ionomer cements, and hard biotissues (enamel or dentin of natural tooth). The present invention also relates to a dental adhesive primer composition including a dental adhesive composition which can be used not only in combination with another adhesive composition but also alone.
Disclosed is a dental composition comprising 0.01 to 10 parts by weight of at least one kind of (a) a visible light-photopolymerization catalyst compound and one or more kinds of (b) di(meth)acrylate compounds represented by the general formula (I):
2 each independently represent hydrogen or a methyl group, and a repeating unit number n of an ethylene oxide group is from 9 to 50.
An object of the present invention is to provide a photopolymerizable dental composition which causes less change in a color tone before and after curing and exhibits excellent photopolymerizability to irradiation in a wide wavelength range, and has also excellent thin-layer surface curability, and to provide a photopolymerization initiator used therefor.
Disclosed is a visible light-polymerizable dental composition which does not substantially contain an amine compound as a photosensitizer, comprising 0.01 to 10 parts by weight of a (bis)acylphosphine oxide compound, 0.01 to 10 parts by weight of an α-diketone compound and 100 parts by weight of a polymerizable monomer.
[PROBLEMS] An object is to arrange an, a Y-axis coil, and a Z-axis coil to be orthogonal to one another, realizing the efficient mass production of sensor coils, and accurately detect the relative positions of an upper jaw and a lower jaw. [MEANS FOR SOLVING PROBLEMS] A jaw movement measuring device detects an alternating current inducted from an exciting coil (1) connected with an alternating-current power source (3) using a sensor coil (2) and thereby detects the relative position of a tooth. The exciting coil (1) and the sensor coil (2) comprises X-axis coils (1a, 2a), Y-axis coils (1b, 2b), and Z-axis coils (1c, 2c) wound in directions orthogonal to one another. In the measuring device, the exciting coil (1) is excited by the alternating-current power source (3), an alternating-current signal inducted to the sensor coil (2) is calculated by a calculation circuit (4), and the three-dimensional position of the tooth on which the sensor coil (2) is fixed is calculated. In the sensor coil (2) comprising the X-axis coil (2a), the Y-axis coil (2b), and the Z-axis coil (2c), a loop coil (8) which is wound to be in the shape of a coil is fixed on an orthogonal plane surface (7A) of a core member (7) having three plane surfaces orthogonal to one another.
[PROBLEMS] The position of a sensor coil is accurately detected by reducing an error caused by crosstalk generated between coils. [MEANS FOR SOLVING PROBLEMS] A jaw movement measuring device detects the relative position of a sensor coil (2) with respect to an exciting coil (1) from an alternating-current signal inducted from the exciting coil (1) connected to an alternating-current power source (3) to the sensor coil (2). The measuring device corrects an alternating-current signal inducted to an X-axis coil (2a) of the sensor coil (2) using a crosstalk signal inducted from a Y-axis coil (2b) and a Z-axis coil (2c) of the sensor coil (2), corrects an alternating-current signal inducted to the Y-axis coil (2b) of the sensor coil (2) using a crosstalk signal inducted from the X-axis coil (2a) and the Z-axis coil (2c) of the sensor coil (2), corrects an alternating-current signal inducted to the Z-axis coil (2c) of the sensor coil (2) using a crosstalk signal inducted from the X-axis coil (2a) and the Y-axis coil (2b) of the sensor coil (2), and calculates the position of a tooth on which the sensor coil (2) is fixed using the alternating-current signal corrected by use of the crosstalk signal.
[PROBLEMS] Dental occlusion is accurately detected by detecting and displaying the track and the posture with respect to a moving distance in a state in which upper and lower teeth are in contact with each other. [MEANS FOR SOLVING PROBLEMS] A device for measuring dental occlusion comprises a position detection sensor (30) for detecting the relative position and the relative posture of a lower jaw (12) with respect to an upper jaw (11), a calculation circuit (31) for calculating a relative posture with respect to a moving distance in a state in which upper and lower teeth are in contact with each other from the relative position and the relative posture of the lower jaw (12) with respect to the upper jaw (11) detected by the position detection sensor (30), and a display monitor (32) for displaying the relative posture with respect to the moving distance calculated by the calculation circuit (31).
It is intended to provide an artificial tooth by which bilateral balanced occlusion can be easily established with little grinding adjustment. The angle between each minor occlusal surface and the occlusal plane of an artificial teeth is appropriately designed. In the case of an artificial tooth for the upper central incisor having the anterior minor occlusal surface and the posterior minor occlusal surface at the edge, for example, the angle of the anterior minor occlusal surface to the occlusal plane in the cut plane to the sagittal plane is from 22.0° to 25.5° while the angle thereof in the cut plane to the coronal plane is from 1.5° to6.5°; and the angle of the posterior minor occlusal surface to the occlusal plane in the cut plane to the sagittal plane is from 20.5° to 23.0° while the angle thereof in the cut plane to the coronal plane is from 1.5° to 6.5°.
An object of the present invention is to provide a one-pack type dental adhesive composition which can exhibit excellent adhesion to any material, for example, dental ceramics, organic composites containing inorganic compounds, dental noble metals and dental non-noble metals, and also has excellent storage stability.
Disclosed is a one-pack type dental adhesive composition comprising a silane coupling agent as a component (a), an acidic group-containing polymerizable monomer as a component (b), a sulfur atom-containing polymerizable monomer as a component (d), and other components.
An occlusal plane analyzer (5) is composed of an analysis board (7) made of a magnetic material and held above a lower jaw model (2), a magnet (8) which can attract the analysis board (7) with magnetic force and which has a circular support hole (15) going through in an attraction direction of the magnetic force, and a Monson curve imparting tool (9) composed of a spherical body section (17) which is made of a magnetic material with a diameter larger than an inside diameter of the support hole (15) and which can be attracted to the support hole (15), an extended section (18) extending from the spherical body section (17), and a spherical surface regenerating section (19) further extending from a distal end of the extended section (18) for drawing a circular arc concentric with the spherical body section (17).
The present invention provides a dental resin cement which is excellent in a mechanical strength, workability and storage stability, and a dental primer which significantly improves adhesiveness of the dental resin cement both to enamel and dentin of a tooth. According to the present invention, a salt of barbituric acid is used as a polymerization initiator in the dual-cure two-paste type dental resin cement being excellent in workability and storage stability to improve the storage stability, and a primer containing barbituric acid and amine is applied to a surface of a tooth to significantly improve adhesiveness of the dental resin cement both to enamel and dentin of teeth.
C08F 30/02 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C08F 2/50 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
The present invention is directed to compounds and adhesives finding special utility in dental applications. Compounds of formulae:
R represents a polymerizable group of the structure
q is an integer from 1 to p.
A medicines-mixing container (1), in which two types of medicines, i.e., a liquid medicine (2) and a powder medicine (4) are stored separately from each other and surely mixed with each other when using them, comprises a first cylinder (6), a first piston (7) fitted into the first cylinder (6) so as to form a first internal space (3), a second cylinder (8) so joined to the first cylinder (6) or the first piston (7) as to be capable of rotating and sliding, and a second piston (9) fitted into the second cylinder (8) so as to form a second internal space (5). Communication holes (13, 14) are formed in the surfaces of the second cylinder (8) and the first cylinder (6) or the first piston (7) to which the second cylinder (8) is connected sliding relative to each other at respective positions eccentric to the rotation axis (X). The first internal space (3) and the second internal space (5) can be communicated with each other or separated from each other in accordance with the rotating/sliding angle of the second cylinder (8) relative to the first cylinder (6) or the first piston (7) to which the second cylinder (8) is connected.
A61J 1/05 - Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids
B65D 81/32 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
72.
DRUG MIXING VESSEL EQUIPPED WITH ELASTIC PARTITION WALL
Drug mixing vessel (1) comprising cylinder (8) including tubular external member (10) and end wall (11) sealing one end of the external tube (10) and having its internal wall surface bulging outward, provided in advance with discharge aperture (15) or able to be provided with discharge aperture (15); elastic partition wall (12) bulging on the opposite side of the internal wall surface of the end wall (11), disposed in the interior of the external tube (10) so as to be able to define mixing chamber (5) within the cylinder (8); and discharge auxiliary member (13) having an end face bulging toward the mixing chamber (5) so as to be able to press the elastic partition wall (12) toward the end wall (11), disposed in the interior of the external tube (10) outside the mixing chamber (5). The drug mixing vessel (1) realizes not only assured mixing of liquid material (2) with powder material (4) but also discharge of mixture (18) of the liquid material (2) and the powder material (4) without wasting.
A61J 1/05 - Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids
B65D 81/32 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
73.
SHELL TYPE PLATE FOR ARTIFICIAL TEETH PROVIDED WITH ARRANGEMENT ASSISTANT FUNCTION
An artificial teeth package (1) provided with an artificial teeth storage part (7), by which a plural number of continuously arranged artificial teeth (2) is detachably fixed in such a manner as holding the appropriate positional relation to the adjacent artificial teeth and the appropriate positional relation to the artificial teeth located in the upper or lower side thereof, characterized in that the artificial teeth storage part (7) covers the artificial teeth (2) from the occlusal surface while exposing the cervical area.
An artificial teeth package (1) characterized by consisting of a storage part (7) having a plural number of storage pockets (10) to (13), into which the individual artificial teeth (2) are inserted from the openings (14) to (17) and stored, and a sealing part (8) which is fixed to the storage part (7) and by which the openings (14) to (17) of the respective storage pockets (10) to (13) as described above holding the artificial teeth (2) stored therein are sealed.
An object of the present invention is to provide a tooth model capable of exhibiting grinding feel similar to that of a natural tooth, with which students aspiring to become dentists experience intraoral work and perform training related to a treatment, and also experience formation of an abutment tooth, formation of cavity or the like. A difference in the grinding feel between tooth enamel and dentin, which constitute a natural tooth, is reproduced by impregnating a sintered body formed integrally of an inorganic powder such as alumina with a thermosetting resin or a low melting point glass to form an enamel portion.
It is intended to provide artificial teeth wherein favorable handling properties in the arrangement can be established by clarifying the three-dimensional positional relationship and the contact areas of the laryngeal top and cavity, which are to be in contact with each other on the occlusal face, in artificial molar teeth in the upper and lower jaws facing each other at the laryngeal top and cavity. In an artificial tooth serving as the lower first premolar having the buccal laryngeal top, the lingual laryngeal top, the mesial cavity and the distal cavity, the orientation with the origin at the distal cavity, the ratio of the distances from the origin to the mesial face, the distal face, the buccal side face and the lingual side face, and the positional relationship between the laryngeal top and cavity are appropriately determined. In an artificial tooth serving as the upper first premolar having the buccal laryngeal top, the lingual laryngeal top, the mesial cavity and the distal cavity, the orientation with the origin at the lingual laryngeal top, the ratio of the distances from the origin to the mesial face, the distal face, the buccal side face and the lingual side face, and the positional relationship between the laryngeal top and cavity are appropriately determined. Then, the distal cavity of the artificial tooth serving as the lower first premolar is brought into contact with the lingual laryngeal top of the artificial tooth serving as the upper first premolar. Moreover, the buccal laryngeal top of the artificial tooth serving as the lower first premolar is brought into contact with the mesial cavity of the artificial tooth serving as the upper first premolar.
A resin-base cement composition paste for dental use which comprises (a) 20 to 50 parts by weight of a polymerizable monomer composition and (b) 50 to 80 parts by weight of a filler that consists essentially of either an inorganic compound or an organic composite containing an inorganic compound and that contains (c) silica fine particles in an amount of 2.0 to 10.0 parts by weight per 100 parts by weight of the paste and which has (d) a yield viscosity of 100 to 3000⏧Pa쮏s] and (e) a thixotropy index of 3.0 or above; a resin-base cement composition for dental use which comprises at least two kinds of pastes as described above that satisfy the requirements (a)-(c) and (e) with the proviso that the yield viscosities (d) of the pastes are 70 to 4000⏧Pa쮏s], characterized in that the pastes are mixed together before application; and a method for controlling the flow characteristics thereof.
Disclosed is a single-component dental adhesive composition having excellent storage stability, which exhibits excellent adhesion to both dental ceramics and organic composite materials containing an inorganic compound. Specifically disclosed is a single-component dental adhesive composition characterized by containing 1-60 parts by weight of a silane coupling agent (a), 1.0-20.0 parts by weight of an acidic group-containing polymerizable monomer (b) per 100 parts by weight of the component (a), and 28-99 parts by weight of a volatile organic solvent (c).
A casting apparatus of simple structure that realizes enhancements of workability and operability. The casting apparatus comprises infrared lamp (1) for emitting of infrared rays; reflecting mirror (2) for focusing the infrared rays from the infrared lamp (1); crucible (4) irradiated with the infrared rays focused by the reflecting mirror (2) so that the metal placed thereinside is melted; and casting mold (7) into which the metal melted in the crucible (4) is cast.
A tooth to be used in a jaw tooth model which allows students under dental training to experience oral works and therapeutic practices. More specifically, a tooth to be used for experiencing morphological studies in the formation of an anchor tooth, the formation of a cavity and so on, in particular, a tooth to be used in a jaw tooth model provided with standards for evaluating tooth formation; a method of producing the same; and an apparatus for confirming tooth formation to be used in a jaw tooth model which is provided with standards for evaluating tooth formation.
A dental adhesive primer composition for use in the dental field employed to bond a dental material, such as a restoration material, dental crown material, prosthetic material, esthetic material, orthodontic material, preventive material, abutment constructing material or root canal material, to a ceramic, metal, resin, composite resin, glass ionomer cement, hard biotissue (enamel or dentin of natural tooth), etc. There is provided a dental adhesive primer composition involving a dental adhesive composition that can be used not only in combination with another adhesive composition but also alone.
A tooth to be used in a dental arch model with which dental students can conduct dental works in the oral cavity and practice treatments. More specifically, a tooth composition for formation trainings such as anchor tooth formation and cavity preparation. Since conventionally used dental arch models have cutting properties different from natural teeth, dental students having completed formation trainings such as anchor tooth formation and cavity preparation by using these conventional models are frequently puzzled to have different cutting and handling properties upon dental works in the oral cavity in practice. That is, these conventional dental arch models are largely different from natural teeth in cutting properties including the slipperiness and easiness in cutting. A tooth for a dental arch model simulating the enamel texture and the dentin texture constituting a natural tooth whereby even the difference in cutting properties between the enamel texture and the dentin texture constituting a natural tooth can be reproduced by forming at least the enamel part with the use of a baked inorganic powder such as alumina.
A tooth to be used in a dental arch model with which dental students can conduct dental works in the oral cavity and practice treatments. More specifically, a tooth composition for formation trainings such as anchor tooth formation and cavity preparation. Since conventionally used dental arch models have cutting properties different from natural teeth, dental students having completed formation trainings such as anchor tooth formation and cavity preparation by using these conventional models are frequently puzzled to have different cutting and handling properties upon dental works in the oral cavity in practice. That is, these conventional dental arch models are largely different from natural teeth in cutting properties including the slipperiness and easiness in cutting. A tooth for a dental arch model simulating the enamel texture and the dentin texture constituting a natural tooth whereby even the difference in cutting properties between the enamel texture and the dentin texture constituting a natural tooth can be reproduced by forming at least the enamel part with the use of a baked inorganic powder such as alumina.
CAMPHORQUINONE DERIVATIVE HAVING ACYLPHOSPHINE OXIDE GROUP, AND CONTAINING THE SAME, PHOTOPOLYMERIZATION CATALYST AND PHOTO/CHEMICAL POLYMERIZATION CATALYST, AND CONTAINING THESE, HARDENABLE COMPOSITION
A compound that exhibits excellent color tone stability and physical properties as well as excellent photopolymerization activity over a wide region from near-ultraviolet to visible region, permitting relaxed operation under ambient light, so that wide application can be found in the dental field and photopolymerization industry; and a relevant photopolymerization initiator and hardenable composition. In particular, there is provided a novel camphorquinone derivative having an acylphosphine oxide group ⏧-(C=O)-(P=O)ឬ] in each molecule. Further, there is provided a photopolymerization initiator comprising the camphorquinone derivative having an acylphosphine oxide group ⏧-(C=O)-(P=O)ឬ] in each molecule as an indispensable component, loaded with at least one member selected from among a polymerization accelerator, a photoacid generator, a photosensitizer and a (bis)acylphosphine oxide, and provided a hardenable composition comprising the initiator. The thus provided photopolymerization initiator and hardenable composition exhibit excellent color tone stability and physical properties as well as excellent photopolymerization activity over an ultraviolet and visible wide wavelength region, permitting relaxed operation under ambient light, so that wide application can be found in the dental field and photopolymerization industry.
It is intended to provide a resin cement for dental use which is excellent in mechanical strength, handling properties and storage stability; and a primer for dental use which can extremely improves the adhesiveness of the resin cement for dental use to both of the enamel and dentin of teeth. Namely, a barbituric acid salt is employed as a polymerization initiator for a two-paste type resin cement for dental use of the dual cure type, which is excellent in handling properties and storage stability, to thereby improve the storage stability. Further, the adhesiveness of the resin cement for dental use to both of the enamel and dentin of teeth can be highly improved by applying a primer containing barbituric acid or its derivative and an amine to the tooth surface.
C08F 30/02 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C09J 185/02 - Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbonAdhesives based on derivatives of such polymers containing phosphorus
An artificial tooth, or denture, excelling in both of reproduction of anatomical configuration and formation of mechanical configuration is made available by providing an artificial tooth having a real artificial tooth part of anatomical configuration obtained by molding a material dyed to enamel color, dentin color, etc. and superimposing on the real artificial tooth part a functional part consisting of a material with visible light transmittance higher than and chromaticness lower than those of the real artificial tooth part. Further, there can be fabricated a variety of artificial teeth that in the production process, permit retaining of real portion at burr treatment, imparting of function of configuration not exhibited by natural teeth, etc. At the fabrication of denture, there can be provided a denture that ensures easy alignment and is readily satisfactory due to real connected teeth, and can be provided a denture that by guidance of the cervical area, enables easy alignment and realizes excellent sensuousness.
It is intended to provide a dental abrading agent showing an excellent abrading performance by which a composite resin for dental use, a ceramic material, a dental restorative material and teeth can be economically and conveniently abraded within a short period of time to give favorable gloss. More specifically speaking, a dental abrading agent having an abrading part comprising grinding particles blended with an elastomer-based binder, characterized in that the abrading part further contains spherical resin particles.
A61C 3/06 - Tooth grinding or polishing discsHolders therefor
B24D 3/02 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
B24D 3/32 - Resins for porous or cellular structure
An object of the present invention is to provide a paste-type cement composition which while retaining adhesion to tooth substance, biocompatibility, surface curability and fluorine sustained-releasability which are the characteristics derived from the conventional glass ionomer cement, reduces water sensitivity which is shortcoming of the conventional glass ionomer cement, enables simple mixing operation, does not adversely affect on the various properties of a cured cement depending on a difference in operators or a skill degree, and can afford various stable properties. There is provided a two paste-type glass ionomer cement comprising a resin-based paste containing a hydrophobic polymerizable monomer and a polymer of acidic group-containing polymerizable monomers which are insoluble to each other, and a water-based paste containing a hydrophilic polymerizable monomer and water which are soluble to each other, in which an acid reactive filler is contained in at least one of pastes.
patents
