Granted Patent B2

US 12,735,350 · App. 18/205,066 · Granted Sep 15, 2026

Inventors: Zhongzhi Tang (Fuzhou, CN); Honglin Liu (Fuzhou, CN)

Assignee: Fuzhou Rick Brown Biomaterials Co., Ltd.

C03C21/002A61C13/083C03C4/0021C03C10/00C03C17/02C03C2204/00C03C2218/32

Abstract

Claims (11)

1 . A glass-ceramic dental prosthesis having a metal ion-reinforced surface and an other surface region, wherein an area of the metal ion-reinforced surface is smaller than an entire surface area of the glass-ceramic dental prosthesis, a concentration of a reinforcing metal ion on the metal ion-reinforced surface is C 1 %, and a concentration of the reinforcing metal ion on the other surface region of the glass-ceramic dental prosthesis is C 2 %, and C 1 is greater than C 2 , and a difference between C 1 and C 2 is greater than 1 and less than 3.

2 . The glass-ceramic dental prosthesis according to claim 1 , wherein the reinforcing metal ion diffuses inwards into the glass-ceramic dental prosthesis from the metal ion-reinforced surface, and the concentration of the reinforcing metal ion decreases inwards gradually from the metal ion-reinforced surface.

3 . The glass-ceramic dental prosthesis according to claim 1 , wherein a preform of the glass-ceramic dental prosthesis is made of a glass-ceramic containing lithium ions.

4 . The glass-ceramic dental prosthesis according to claim 3 , wherein the glass-ceramic containing lithium ions is a lithium silicate glass-ceramic.

5 . The glass-ceramic dental prosthesis according to claim 1 , wherein the reinforcing metal ions are one or more selected from the group consisting of an alkali metal ion and an alkaline earth metal ion.

6 . The glass-ceramic dental prosthesis according to claim 5 , wherein the reinforcing metal ions are one or more selected from the group consisting of potassium ion, sodium ion, calcium ion, magnesium ion, rubidium ion and cesium ion.

7 . The glass-ceramic dental prosthesis according to claim 6 , wherein the reinforcing metal ion is a potassium ion.

8 . The glass-ceramic dental prosthesis according to claim 1 , wherein the other surface region is provided with a glazed layer.

9 . A method for preparing a glass-ceramic dental prosthesis of claim 8 , comprising:

performing a glazing treatment on a preform of a glass-ceramic dental prosthesis, and forming a glazed layer in an other surface region;

chemically reinforcing the prepared preform to form a metal ion-reinforced surface.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (19)