US 12,102,698 B2
Masking compositions for milled lithium-silicate glass-ceramic dental restorations and method for making same
David J. Stine, Cheshire, CT (US); Donald F. Cornell, Madison, CT (US); and Yoonho Jun, Weatogue, CT (US)
Assigned to Jensen Industries Inc., North Haven, CT (US)
Filed by Jensen Industries Inc., North Haven, CT (US)
Filed on Nov. 18, 2020, as Appl. No. 16/951,134.
Claims priority of provisional application 62/936,928, filed on Nov. 18, 2019.
Prior Publication US 2021/0145702 A1, May 20, 2021
Int. Cl. A61K 6/833 (2020.01); A61K 6/65 (2020.01); A61K 6/71 (2020.01); A61K 6/77 (2020.01); A61K 6/78 (2020.01); A61K 6/887 (2020.01); A61K 6/891 (2020.01); C03C 1/04 (2006.01); C03C 4/00 (2006.01); C03C 8/00 (2006.01)
CPC A61K 6/833 (2020.01) [A61K 6/65 (2020.01); A61K 6/71 (2020.01); A61K 6/77 (2020.01); A61K 6/78 (2020.01); A61K 6/887 (2020.01); A61K 6/891 (2020.01); C03C 1/04 (2013.01); C03C 4/0021 (2013.01); C03C 8/00 (2013.01)] 26 Claims
 
1. A masking composition to coat a lithium-silicate glass-ceramic dental restoration in soft state, the masking composition comprising:
at least one glaze powder;
at least one opacifier; and
at least one colorant,
wherein the opacifier and colorant are designed to disappear during a crystallization cycle.