US 12,133,781 B2
Method of making anterior dental restorations from sintered preforms
Marco Antonio Jokada, Diamond Bar, CA (US); David Christopher Leeson, Laguna Beach, CA (US); Vaheh Golestanian Nemagrdi, Orange, CA (US); Prabhakar Thirugnanasambandam, Irvine, CA (US); and Kenad Destanovic, Mission Viejo, CA (US)
Assigned to James R. Glidewell Dental Ceramics, Inc., Newport Beach, CA (US)
Filed by James R. Glidewell Dental Ceramics, Inc., Newport Beach, CA (US)
Filed on Nov. 29, 2023, as Appl. No. 18/522,574.
Application 18/522,574 is a continuation of application No. 18/161,454, filed on Jan. 30, 2023, granted, now 11,850,110.
Application 18/161,454 is a continuation of application No. 17/085,239, filed on Oct. 30, 2020, granted, now 11,564,773, issued on Jan. 31, 2023.
Claims priority of provisional application 62/929,303, filed on Nov. 1, 2019.
Prior Publication US 2024/0090975 A1, Mar. 21, 2024
Int. Cl. A61C 5/77 (2017.01); A61C 13/00 (2006.01); A61C 13/083 (2006.01); A61K 6/818 (2020.01)
CPC A61C 5/77 (2017.02) [A61C 13/0004 (2013.01); A61C 13/083 (2013.01); A61K 6/818 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method for making an anterior dental restoration from a fully sintered zirconia preform, comprising
obtaining an anterior dental restoration virtual design and a virtual model of a preform body;
nesting the anterior dental restoration virtual design within the virtual model of the preform;
generating machining instructions for shaping an anterior dental restoration from a fully sintered zirconia preform, said machining instructions comprising:
a first tool path for shaping a first portion of a cavity side of the anterior dental restoration,
a second tool path for shaping a second portion of the cavity side of the anterior dental restoration,
a third tool path for shaping a first portion of an incisal side of the anterior dental restoration, and
a fourth tool path for shaping a second portion of the incisal side of the anterior dental restoration; and
machining the fully sintered zirconia preform using the machining instructions.