Abstract

The present invention relates to a phosphor composition and a preparation method therefor and, specifically, to silicate-based, phosphate-based, and borate-based phosphor compositions and preparation methods therefor, wherein the compositions have similar luminescence characteristics to natural teeth of a subject to be treated, by doping a host material with metal cations of rare earth elements (REE) at a predetermined ratio.

IPC Classes  ?

• C09K 11/77 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals
• A61K 6/842 - Rare earth metals
• A61K 6/20 - Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
• A61K 6/15 - Compositions characterised by their physical properties

Abstract

The present invention relates to a three-dimensional molded article washing device capable of generating a vortex or vibration in washing liquid through the rotation of a rotating rod driven by means of a magnetic field, and of washing a molded article manufactured by means of a three-dimensional printer with the washing liquid in which the vortex or vibration is generated, the three-dimensional molded article washing device comprising: a magnetic field generating device for generating a magnetic field through power supplied from the outside in order to perform magnetic stirring; a washer tank which has an open top with a polyhedral shape so as to be detachably mounted on the magnetic field generating device, and which has a washing liquid vortex generating part for generating a vortex in the washing liquid accommodate therein; a universal jig which is detachably mounted in the washer tank, and which fixes the position of the three-dimensional printed molded article so that the three-dimensional printed molded article is positioned in the washing liquid; and a cover which has predetermined weight and which covers the top of the washer tank, wherein the washing liquid vortex generating part generates a vortex in the washing liquid by means of the magnetic stirring of the magnetic field generating device, thereby washing the three-dimensional printed molded article.

IPC Classes  ?

• B29C 64/35 - Cleaning
• B08B 3/12 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
• B08B 3/10 - Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

The present invention relates to a method for pre-treating a surface of a dental restoration and an etching and neutralizing reaction vessel for zirconia surface treatment, the method comprising: an etching gel application step of applying an etching gel to zirconia; a neutralizing gel application step of applying a neutralizing gel to a cover portion of a reaction vessel; a heat supplying step of supplying heat to the reaction vessel to simultaneously perform etching and neutralizing; and a washing step of feeding a washing solution into the cover portion of the reaction vessel.

IPC Classes  ?

• A61C 13/02 - Bases made by galvanoplastic methodsSurface treatmentEnamellingPerfumingMaking antiseptic
• A61C 13/00 - Dental prosthesesMaking same
• A61C 13/083 - Porcelain or ceramic teeth
• C04B 41/91 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
• A61K 6/80 - Preparations for artificial teeth, for filling teeth or for capping teeth
• C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone

Abstract

The present invention relates to a method for pretreating the surface of a dental repair material, comprising the steps of: coating zirconia with an etching gel; coating the coated etching gel with a neutralization gel; etching and neutralizing the zirconia coated with the etching gel and the neutralization gel; and washing the etched and neutralized zirconia. Hazardous factors such as hydrofluoric acid vapor to be generated during etching are removed such that worker safety is guaranteed and work efficiency is improved.

IPC Classes  ?

• A61C 13/00 - Dental prosthesesMaking same
• A61C 13/02 - Bases made by galvanoplastic methodsSurface treatmentEnamellingPerfumingMaking antiseptic
• A61C 13/225 - Fastening prostheses in the mouth
• A61C 13/083 - Porcelain or ceramic teeth
• C23F 1/16 - Acidic compositions