Patent · US Active

Method to produce a dental structure and dental structure

US11427504B2 · kind B2 · utility

0Cited by

25References

8Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Markus Vollmann · Gelnhausen, DE
Udo Schusser · Alzenau, DE

Key dates

Filing date	May 19, 2016
Grant date	Aug 30, 2022
Priority date	—
Expiry date	Oct 21, 2036

Classification

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

Abstract

The invention relates to a method to produce a dental structure with a cavity having a negative form of the structure, which is formed in an investment material, wherein flowable lithium silicate glass ceramic is pressed into the cavity. Thereby a compressive surface stress is created in the ceramic structure through the replacement of lithium ions by alkali ions, in that the model is enriched with alkali compounds and/or the model is covered with a layer of a material containing alkali ions.

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