公开(公告)号：US20170128174A1

公开(公告)日：2017-05-11

申请号：US15319138

申请日：2015-06-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Helmut Mayr ,  Gallus Schechner

IPC: A61C13/00 ,  A61C13/083 ,  C03B19/01 ,  C03B19/06 ,  C03C19/00 ,  C03C17/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C03C10/00 ,  C03C4/00 ,  C03C8/08 ,  C03C3/097 ,  A61K6/02 ,  A61K6/06 ,  A61K6/00 ,  A61C5/77

CPC classification number: A61C13/0006 ,  A61C5/70 ,  A61C5/77 ,  A61C13/0004 ,  A61C13/0022 ,  A61C13/083 ,  A61K6/0002 ,  A61K6/0005 ,  A61K6/0094 ,  A61K6/024 ,  A61K6/025 ,  A61K6/0612 ,  A61K6/0662 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C03B19/01 ,  C03B19/06 ,  C03C3/097 ,  C03C4/0021 ,  C03C8/08 ,  C03C10/0027 ,  C03C17/001 ,  C03C19/00 ,  C03C2204/00 ,  C03C2205/06 ,  C03C2217/485 ,  C03C2218/111 ,  C03C2218/114

Abstract: The present invention is directed to a process for producing a sintered lithium disilicate glass ceramic dental restoration out of a porous 3-dim article, the process comprising the step of sintering the porous 3-dim article having the shape of a dental restoration with an outer and inner surface to obtain a sintered lithium disilicate ceramic dental restoration, the sintered lithium disilicate glass ceramic dental restoration comprising—Si oxide calculated as SiO2 from 55 to 80 wt.-%, —Li oxide calculated as Li2O from 7 to 16 wt.-%, —Al oxide calculated as Al2O3 from 1 to 5 wt.-%, and—P oxide calculated as P2O5 from 1 to 5 wt.-%, wt.-% with respect to the weight of the dental restoration, the sintering being done under reduced atmospheric pressure conditions, the reduced atmospheric pressure conditions being applied at a temperature above 600° C. The present invention is also directed to a kit of parts comprising a porous 3-dim article having the shape of a dental milling block and a respective instruction of use.