# US 10,311,753 B2 · Compression method tooth

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- Number: US 10,311,753 B2
- Document ID: US10311753B2
- Status: Granted
- Kind: B2
- Application number: 15/017,873
- Filed: 2016-02-08
- Published: 2016-10-06
- Granted: 2019-06-04
- Earliest claimed: 2015-04-01
- Assignees: Shofu Inc.
- Applicants: Shofu Inc.
- Inventors: Yusei Kadobayashi; Masako Shigezawa
- Web page: https://patentgrep.com/patent/US10311753B2

## CPC

- G09B 23/283: {for dentistry or oral hygiene (G09B23/286 takes precedence)}
- A61C 13/081: {Making teeth by casting or moulding}
- A61C 13/09: {Composite teeth, e.g. front and back section (A61C13/0835, A61C13/1023 take precedence)}; Multilayer teeth
- A61K 6/79: Initiators
- A61K 6/831: comprising non-metallic elements or compounds thereof, e.g. carbon
- B29C 43/146: {for making multilayered articles}
- B29C 2043/147: {by compressing after the laying of further material}
- B29K 2003/00: Use of starch or derivatives as moulding material
- B29L 2031/7536: {Artificial teeth}
- G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B)
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

The compression molded tooth used for practicing dental cutting treatment of the present invention comprises a composition containing a powder or powders of saccharide, polysaccharide, protein, and/or glycoprotein each having a particle size of 1 to 100 μm.

## Claims

### Claim 1

A compression molded tooth used for practicing dental cutting treatment consisting of a compression molded article of a composition consisting of a powder or powders of saccharide, polysaccharide, protein, and/or glycoprotein each having a particle size of 1 to 100 μm.

### Claim 2 (depends on 1)

The compression molded tooth according to claim 1, wherein the tooth has portions where the numbers of compression molding cycles are different.

### Claim 3 (depends on 1)

The compression molded tooth according to claim 1, wherein the tooth comprises a first portion constituting an enamel tooth portion and a second portion constituting a dentin tooth portion, wherein the number of compression molding cycles for the first portion is larger than the number of compression molding cycles for the second portion.

### Claim 4 (depends on 1)

The compression molded tooth according to claim 1, wherein the tooth has a third portion different from the first portion and the second portion therein.

### Claim 5 (depends on 4)

The compression molded tooth according to claim 4, wherein the third portion constitutes a dental caries portion, a dental pulp portion, and/or a cutting target portion.

### Claim 6 (depends on 1)

A method for producing a compression molded tooth according to claim 1 comprising: molding a crown side using a concave mold; and molding a root side using a convex mold.

### Claim 7 (depends on 6)

The method for producing a compression molded tooth according to claim 6, wherein an enamel tooth portion closer to an occlusal surface is molded using a first convex mold, and then a dentin tooth portion is molded using a second convex mold.

### Claim 8 (depends on 7)

The method for producing a compression molded tooth according to claim 7, wherein molding pressure for the first convex mold is 20 to 100 MPa; molding pressure for the second convex mold is 5 to 85 MPa; and the molding pressure for the second convex mold is lower by 15 MPa or more as compared with the molding pressure for the first convex mold.