US 11,744,685 B2
Lithium silicate materials
Marcel Schweiger, Chur (CH); Volker Rheinberger, Vaduz (LI); Harald Bürke, Frastanz (AT); Wolfram Höland, Schaan (LI); Elke Signer-Apel, Oberschan (CH); Christian Ritzberger, Nenzing (AT); and Dmitri Brodkin, Livingston, NJ (US)
Assigned to Ivoclar Vivadent AG, Schaan (LI)
Filed by Ivoclar Vivadent AG, Schaan (LI)
Filed on Jun. 27, 2022, as Appl. No. 17/809,225.
Application 13/834,526 is a division of application No. 12/833,721, filed on Jul. 9, 2010, granted, now 8,444,756, issued on May 21, 2013.
Application 12/253,437 is a division of application No. 11/348,053, filed on Feb. 6, 2006, granted, now 7,452,836, issued on Nov. 18, 2008.
Application 11/935,203 is a division of application No. 10/913,095, filed on Aug. 6, 2004, granted, now 7,316,740, issued on Jan. 8, 2008.
Application 17/809,225 is a continuation of application No. 16/997,050, filed on Aug. 19, 2020, granted, now 11,369,460.
Application 16/997,050 is a continuation of application No. 16/200,187, filed on Nov. 26, 2018, granted, now 11,109,949, issued on Sep. 7, 2021.
Application 16/200,187 is a continuation of application No. 14/984,490, filed on Dec. 30, 2015, granted, now 10,136,973, issued on Nov. 27, 2018.
Application 14/984,490 is a continuation of application No. 13/834,526, filed on Mar. 15, 2013, granted, now 9,248,078, issued on Feb. 2, 2016.
Application 12/833,721 is a continuation in part of application No. 12/509,959, filed on Jul. 27, 2009, granted, now 7,816,291, issued on Oct. 19, 2010.
Application 12/509,959 is a continuation in part of application No. 12/253,437, filed on Oct. 17, 2008, granted, now 7,871,948, issued on Jan. 18, 2011.
Application 12/509,959 is a continuation of application No. 11/935,203, filed on Nov. 5, 2007, granted, now 8,047,021, issued on Nov. 1, 2011.
Claims priority of application No. 10036913.9 (DE), filed on Aug. 7, 2003; application No. 102005028637.2 (DE), filed on Jun. 20, 2005; and application No. 05002588 (EP), filed on Aug. 8, 2005.
Prior Publication US 2022/0323185 A1, Oct. 13, 2022
Int. Cl. A61C 13/083 (2006.01); C03C 3/097 (2006.01); C03C 10/00 (2006.01); A61C 5/77 (2017.01); A61K 6/802 (2020.01); A61C 13/00 (2006.01); A61C 13/09 (2006.01); C03B 19/02 (2006.01); C03B 32/02 (2006.01); C03C 4/00 (2006.01); C03C 17/02 (2006.01)
CPC A61C 13/083 (2013.01) [A61C 5/77 (2017.02); A61C 13/0006 (2013.01); A61C 13/0022 (2013.01); A61C 13/09 (2013.01); A61K 6/802 (2020.01); C03B 19/02 (2013.01); C03B 32/02 (2013.01); C03C 3/097 (2013.01); C03C 4/0021 (2013.01); C03C 10/0009 (2013.01); C03C 10/0027 (2013.01); C03C 17/02 (2013.01); C03C 2217/92 (2013.01)] 2 Claims
 
1. A dental restoration having a biaxial strength of at least 250 MPa and a fracture toughness of at least 1.5 MPam0.5, wherein the dental restoration is produced from a lithium silicate dental glass-ceramic article comprising: lithium metasilicate as the main crystalline phase with 20-50 vol % lithium metasilicate crystalline phase.