# US 10,865,133 B2 · Dental glass and dental composition

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- Number: US 10,865,133 B2
- Document ID: US10865133B2
- Status: Granted
- Kind: B2
- Application number: 16/315,781
- Filed: 2017-07-04
- Published: 2019-05-23
- Granted: 2020-12-15
- Earliest claimed: 2016-07-15
- Assignees: GC Corporation
- Applicants: GC Corporation
- Inventors: Shigenori Akiyama; Ryosuke Yoshimitsu; Satomi Tateiwa; Katsushi Yamamoto; Syouichi Fukushima
- Web page: https://patentgrep.com/patent/US10865133B2

## CPC

- C03C 4/0021: {for dental use}
- C03C 3/16: containing phosphorus
- C03C 4/0035: {for soluble glass for controlled release of a compound incorporated in said glass}
- A61K 6/833: Glass-ceramic composites
- A61K 6/838: Phosphorus compounds, e.g. apatite
- A61P 1/02: Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
- C03C 3/19: containing boron
- C03C 3/247: containing fluorine and phosphorus
- C03C 2205/06: for dental use
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- 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)
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS

## Abstract

A dental glass includes: phosphorus; sodium and/or potassium; and calcium, wherein the dental glass contains, in terms of oxide, phosphorus (P2O5) by greater than or equal to 40% by mass and less than or equal to 70% by mass, sodium and/or potassium (Na2O, K2O) by greater than or equal to 20% by mass and less than or equal to 40% by mass, and calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 20% by mass, and wherein the dental glass does not substantially contain silicon and aluminum.

## Claims

### Claim 1

A dental glass comprising:
phosphorus;
sodium and/or potassium; and
calcium,
wherein the dental glass contains, in terms of oxide,
phosphorus (P2O5) by greater than or equal to 40% by mass and less than or equal to 70% by mass,
sodium and/or potassium (Na2K2O) by greater than or equal to 20% by mass and less than or equal to 40% by mass, and
calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 6.4% by mass, and
wherein the dental glass does not substantially contain, silicon and aluminum.

### Claim 2 (depends on 1)

A dental composition comprising the dental glass according to claim 1.

### Claim 3

A dental glass comprising:
phosphorus;
sodium and or potassium; and
calcium,
wherein the dental glass contains, in terms of oxide,
phosphorus (P2O5) by greater than or equal to 40% by mass and less than or equal to 70% by mass,
sodium and/or potassium (Na2O, K2O) by greater than or equal to 25% by mass and less than or equal to 40% by mass, and
calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 20% by mass, and
wherein the dental glass does not substantially contain silicon and aluminum.

### Claim 4

A dental composition comprising:
a dental glass; and
a (meth)acrylate,
wherein the dental glass contains, in terms of oxide,
phosphorus (P2O5) by greater than or equal to 40% by mass and less than or equal to 70% by mass,
sodium and/or potassium (Na2O, K2O) by greater than or equal to 20% by mass and less than or equal to 40% by mass, and
calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 20% by mass, and
wherein the dental glass does not substantially contain silicon and aluminum.