US 11,918,427 B2
Reduction or guidance coping
David Leeson, North Tustin, CA (US); Terry Reed, Midway City, CA (US); Summer Ree Takenaka, Fullerton, CA (US); Babak Manafighazani, Rancho Santa Margarita, CA (US); and Andrey Lebedev, Moscow (RU)
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 Jun. 2, 2022, as Appl. No. 17/830,755.
Application 17/830,755 is a continuation of application No. 16/918,586, filed on Jul. 1, 2020, granted, now 11,351,015.
Claims priority of provisional application 62/869,331, filed on Jul. 1, 2019.
Prior Publication US 2022/0287807 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61C 13/00 (2006.01); A61C 5/77 (2017.01); G16H 50/50 (2018.01)
CPC A61C 13/0004 (2013.01) [A61C 5/77 (2017.02); G16H 50/50 (2018.01)] 16 Claims
OG exemplary drawing
 
1. A computer-implemented method of generating a reduction coping, comprising:
receiving a digital model generated from an intraoral scan of a patient's dentition, the digital model comprising a virtual preparation tooth;
determining one or more virtual reduction regions on the virtual preparation tooth; and
generating a virtual reduction coping comprising one or more exposed regions corresponding to the one or more virtual reduction regions,
wherein determining one or more necessary virtual reduction regions comprises:
detecting an insufficient clearance between one or more surfaces of the virtual preparation tooth and one or more other dental features; and
detecting an insufficient virtual occlusal clearance,
wherein detecting an insufficient virtual occlusal clearance comprises determining that a virtual occlusal clearance between one or more virtual preparation tooth occlusal surfaces and one or more virtual opposing tooth occlusal surfaces is less than a minimum required occlusal clearance;
wherein the minimum required occlusal clearance comprises a minimum restoration thickness,
wherein the minimum restoration thickness is determined automatically based on a restoration type selected.