Abstract A porcelain tooth structure and method of making the same in which a powder-form porcelain is mixed with an adhesive, in an amount suffficient to form a coherent mass of the porcelain, to form a workable paste, the paste is formed into a tooth structure having the general shape of a desired, finished tooth, preferably by molding in a metal, plastic or rubber mold, the molded tooth is dried, generally at a temperature between ambient temperature and about 600° F and the adhesive in at least a part of the tooth structure is rendered water-resistant by utilizing an inherently water-resistant adhesive or treating a water-soluble adhesive with an agent which renders the adhesive water-resistant, such as a solvent, a hardening agent for the adhesive, a water-immiscible oil or another agent which combines with the adhesive by chemical reaction, physico-chemical reaction or physical action, either during the mixing of the porcelain and adhesive or after the drying of the tooth structure. The tooth structure may thereafter be semi-baked at a temperature sufficient to form a concretious tooth structure, generally above about 1200° F, but below the vitrification temperature of the procelain.
Inventors
👤 Rafael Gnecco
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 01:35
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/08; A61C13/081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
A method of making a porcelain tooth structure, comprising preparing a paste of powder-form porcelain and an adhesive material, in an amount sufficient to form a cohesive mass of said porcelain, forming said paste into the general shape of a desired, finished porcelain tooth and drying said formed paste to produce an unbaked, dry, coherent tooth structure, said adhesive in at least part of said tooth structure being a water-soluble adhesive treated with an agent during the formation of the paste to render said adhesive water-resistant after drying, said agent entering into a physico-chemical reaction with said adhesive, and said adhesive being volatilizable below vitrification temperature and leaving no discoloring effect, and said porcelain being compatible with standard commercial porcelains so that when standard commercial porcelain is added to the structure and the entire structure is fired, a monolithic structure results.
Claim 2
Independent Claim
141 words
A method of making a porcelain tooth structure, comprising preparing a paste of powder-form porcelain and an adhesive material, in an amount sufficient to form a cohesive mass of said porcelain, forming said paste into the general shape of a desired, finished porcelain tooth and drying said formed paste to produce an unbaked, dry, coherent tooth structure, said adhesive in at least part of said tooth structure being a water-soluble adhesive treated with an agent during the formation of the paste to render said adhesive water-resistant after drying, said agent entering into a physico-chemical reaction with said adhesive, and said adhesive being volatilizable below vitrification temperature and leaving no discoloring effect, and said porcelain being compatible with standard commercial porcelains so that when standard commercial porcelain is added to the structure and the entire structure is fired, a monolithic structure results.
Claim 3
Dependent Claim
18 words
A method in accordance with claim 1 wherein the agent to render the adhesive water-resistant is a solvent.
Claim 4
Dependent Claim
19 words
A method in accordance with claim 1 wherein the agent to render the adhesive water-resistant is a hardening agent.
Claim 5
Dependent Claim
23 words
A method in accordance with claim 1 wherein the agent to render the adhesive water-resistant enters into a chemical reaction with said adhesive.
Claim 6
Dependent Claim
22 words
A method in accordance with claim 1 wherein the agent to render the adhesive water-resistant has a physical effect on said adhesive.