Dental glass and dental composition

Patent metadata

Field	Value
Publication number	US-10865133-B2
Application number	US-201716315781-A
Country	US
Kind code	B2
Filing date	Jul 4, 2017
Priority date	Jul 15, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A dental glass includes: phosphorus; sodium and/or potassium; and calcium, wherein the dental glass contains, in terms of oxide, phosphorus (P 2 O 5 ) by greater than or equal to 40% by mass and less than or equal to 70% by mass, sodium and/or potassium (Na 2 O, K 2 O) 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.

First claim

The invention claimed is:

1. A dental glass comprising:
phosphorus;
sodium and/or potassium; and
calcium,
wherein the dental glass contains, in terms of oxide,
phosphorus (P 2 O 5 ) by greater than or equal to 40% by mass and less than or equal to 70% by mass,
sodium and/or potassium (Na 2 K 2 O) 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.

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

3. A dental glass comprising:
phosphorus;
sodium and or potassium; and
calcium,
wherein the dental glass contains, in terms of oxide,
phosphorus (P 2 O 5 ) by greater than or equal to 40% by mass and less than or equal to 70% by mass,
sodium and/or potassium (Na 2 O, K 2 O) 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.

4. A dental composition comprising:
a dental glass; and
a (meth)acrylate,
wherein the dental glass contains, in terms of oxide,
phosphorus (P 2 O 5 ) by greater than or equal to 40% by mass and less than or equal to 70% by mass,
sodium and/or potassium (Na 2 O, K 2 O) 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.

Assignees

• G C Dental Ind Corp

Inventors

• Akiyama Shigenori
• Yoshimitsu Ryosuke
• Tateiwa Satomi
• Yamamoto Katsushi
• Fukushima Syouichi

Classifications

• C03C4/0035

  for soluble glass for controlled release of a compound incorporated in said glass · CPC title

• C03C3/16

  containing phosphorus · CPC title

• C03C4/0021 Primary

  for dental use · CPC title

• C03C3/19

  containing boron · CPC title

• C03C2205/06

  for dental use · CPC title