Patent · US Active

Method to increase the strength of a form body of lithium silicate glass ceramic

US10745319B2 · kind B2 · utility

0Cited by

6References

11Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Michael PRÖPSTER · Bruchköbel, DE
Markus Vollmann · Gelnhausen, DE

Key dates

Filing date	May 20, 2016
Grant date	Aug 18, 2020
Priority date	—
Expiry date	Jul 17, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2204/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to a method to produce a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that a surface compressive stress is created in a form body of lithium silicate glass, or containing lithium silicate glass, through the replacement of lithium ions by alkali metal ions of greater diameter. For this purpose the form body is covered with a paste that contains alkali metal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.