Jörg Reinshagen;Michael Winterling;Sascha Cramer Von Clausbruch
发明人:
Jörg Reinshagen,Sascha Cramer Von Clausbruch,Michael Winterling
申请号：
US13993972
公开号：
US09901426B2
申请日:
2011.12.19
申请国别(地区):
US
年份:
2018
代理人:
摘要：
The invention discloses a blank for producing dental shaped parts which consists entirely of porous glass without crystalline portions. The density of the blank is between 50% and 95% of its theoretical density. It has a discoidal shape with a diameter of at least 20 mm. The blank is produced by a process in which glass powder is first pressed at a pressure of between 10 MPa and 300 MPa and this green body is (pre-)sintered at a temperature of between 580° C. and 750° C. to form a blank of porous glass without crystalline portions. From the obtained blank, monolithic dental shaped parts can be obtained by mechanical processing followed by sintering, wherein a process according to the invention for stabilizing the shape of the shaped parts is used.
