US 12,252,435 B2
Glass ceramic having SiO2 as main crystal phase
Markus Rampf, Seewis-Dorf (CH); Marc Dittmer, Feldkirch (AT); Christian Ritzberger, Grabs (CH); Marcel Schweiger, Chur (CH); and Wolfram Höland, Schaan (LI)
Assigned to Ivoclar Vivadent AG, Schaan (LI)
Filed by Ivoclar Vivadent AG, Schaan (LI)
Filed on Jul. 12, 2021, as Appl. No. 17/372,663.
Application 17/372,663 is a continuation of application No. 16/454,747, filed on Jun. 27, 2019, granted, now 11,091,388.
Application 16/454,747 is a continuation of application No. 15/310,823, granted, now 10,377,661, issued on Aug. 13, 2019, previously published as PCT/EP2015/060765, filed on May 15, 2015.
Claims priority of application No. 14168719 (EP), filed on May 16, 2014.
Prior Publication US 2021/0340057 A1, Nov. 4, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 10/00 (2006.01); A61C 13/00 (2006.01); A61C 13/08 (2006.01); A61C 13/083 (2006.01); A61K 6/833 (2020.01); A61K 6/836 (2020.01); C03B 19/06 (2006.01); C03B 32/00 (2006.01); C03C 3/087 (2006.01); C03C 3/097 (2006.01); C03C 3/112 (2006.01); C03C 4/00 (2006.01)
CPC C03C 10/0009 (2013.01) [A61C 13/0004 (2013.01); A61C 13/081 (2013.01); A61C 13/083 (2013.01); A61K 6/833 (2020.01); A61K 6/836 (2020.01); C03B 19/063 (2013.01); C03B 32/00 (2013.01); C03C 3/087 (2013.01); C03C 3/097 (2013.01); C03C 3/112 (2013.01); C03C 4/0021 (2013.01); C03C 10/0027 (2013.01); C03C 2204/00 (2013.01)] 18 Claims
 
13. Glass ceramic, which comprises the following components
 
 
 
 Component wt.-%
 
 
 
 SiO2 58.0 to 92.0
 
 Li2O  2.0 to 10.0
 
 
and comprises SiO2 as main crystal phase and comprises lithium phosphate and/or lithium silicate as further crystal phase,
wherein the glass ceramic is a dental restoration, wherein the dental restoration comprises a bridge, veneer, abutment, partial crown, crown or facet.