Dental liner and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-11433002-B2
Application number	US-201816639519-A
Country	US
Kind code	B2
Filing date	Aug 8, 2018
Priority date	Aug 18, 2017
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A dental liner and a manufacturing method therefor are disclosed. The dental liner is a dental liner for coupling feldspar porcelain and zirconia and includes: silicon dioxide; aluminum oxide; 1,4-butanediol for maintaining the moisture of the dental liner and preventing the generation of layers; and a zirconia powder for coupling the dental liner and zirconia by strengthening chemical bonding of the dental liner and zirconia.

First claim

The invention claimed is:

1. A dental liner for bonding feldspar porcelain and zirconia, the dental liner comprising:
silicon dioxide;
aluminum oxide;
1,4-butanediol for retaining moisture of the dental liner and preventing occurrence of layers; and
zirconia powder for reinforcing chemical bonding between the dental liner and the zirconia to bond the dental liner and the zirconia.

2. The dental liner as claimed in claim 1 , further comprising: cryolite for melting the dental liner at a temperature in a predetermined range, when the dental liner is bonded to the zirconia and then fired.

3. The dental liner as claimed in claim 2 , wherein the temperature in a predetermined range is 900° C. to 1000° C.

4. The dental liner as claimed in claim 1 , further comprising: bismuth oxide for imparting fluorescence to the zirconia,
wherein the bismuth oxide is dissolved in hydrochloric acid or nitric acid.

5. A method of manufacturing a dental liner for bonding feldspar porcelain and zirconia, the method comprising:
mixing silicon dioxide, aluminum oxide, zirconia powder, and cryolite;
adding 1,4-butanediol for retaining moisture of the dental liner and preventing occurrence of layers and performing mixing; and
dissolving bismuth oxide for imparting fluorescence to the zirconia in hydrochloric acid or nitric acid and mixing the bismuth oxide dissolved in hydrochloric acid or nitric acid.

6. The method of manufacturing a dental liner as claimed in claim 5 , wherein the dental liner includes:
50 to 60 parts by weight of the silicon dioxide;
5 to 10 parts by weight of the aluminum oxide;
10 to 20 parts by weight of the zirconia powder;
5 to 10 parts by weight of the cryolite;
20 to 30 parts by weight of the 1,4-butanediol;
1 to 5 parts by weight of the bismuth oxide; and
1 to 5 parts by weight of the hydrochloric acid or nitric acid.

Assignees

• Kyungpook Nat Univ Ind Academic Coop Found

Inventors

• Kwon Tae Yub
• Lee Hee Sung
• Seo An Na

Classifications

• A61K6/60

  comprising organic or organo-metallic additives · CPC title

• A61K6/80

  Preparations for artificial teeth, for filling teeth or for capping teeth · CPC title

• A61K6/818 Primary

  comprising zirconium oxide · CPC title

• A61K6/816 Primary

  comprising titanium oxide · CPC title

• A61K6/20

  Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish · CPC title