US 12,334,207 B2
Automatic approach to establish dental occlusion for 1-piece, 2-piece, and 3-piece maxillary orthognathic surgeries
James Jiong Xia, Houston, TX (US); Jaime Gateno, Bellaire, TX (US); Peng Yuan, Princeton, NJ (US); and Han Deng, Houston, TX (US)
Assigned to THE METHODIST HOSPITAL SYSTEM, Houston, TX (US)
Appl. No. 17/765,880
Filed by THE METHODIST HOSPITAL SYSTEM, Houston, TX (US)
PCT Filed Oct. 12, 2020, PCT No. PCT/US2020/055263
§ 371(c)(1), (2) Date Apr. 1, 2022,
PCT Pub. No. WO2021/072378, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/913,393, filed on Oct. 10, 2019.
Prior Publication US 2022/0351829 A1, Nov. 3, 2022
Int. Cl. G16H 20/40 (2018.01); A61C 13/34 (2006.01); A61C 19/05 (2006.01)
CPC G16H 20/40 (2018.01) [A61C 13/34 (2013.01); A61C 19/05 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A system for establishing dental occlusion, comprising:
a processor; and
a memory in communication with the processor, the memory having computer-executable instructions stored thereon that, when executed by the processor, cause the processor to:
receive a maxillary dental model and a mandibular dental model;
identify a plurality of dental landmarks in each of the maxillary and mandibular dental models, wherein the dental landmarks comprise a plurality of maxillary dental landmarks and a plurality of mandibular dental landmarks;
extract a plurality of points-of-interest from each of the maxillary and mandibular dental models;
align the maxillary and mandibular dental models; and
fine tune the alignment of the maxillary and mandibular dental models to achieve maximum contact with a collision constraint, wherein the maxillary dental model comprises a plurality of individual segments, wherein the individual segments are a major segment and a minor segment, and wherein aligning the maxillary and mandibular dental models comprises:
aligning the major segment of the maxillary dental model and the mandibular dental model by aligning a midline pair and at least one canine or embrasure pair of the maxillary and mandibular dental landmarks along a tangent line of a dental arch, and by minimizing a sum of distances between at least one molar pair of the maxillary and mandibular dental landmarks; and aligning the minor segment of the maxillary dental model and the mandibular dental model by aligning an embrasure between teeth of the major and minor segments of the maxillary dental model and at least one canine, premolar or embrasure pair of the maxillary and mandibular dental landmarks along the tangent line of the dental arch, and by minimizing a sum of distances between at least one molar pair of the maxillary and mandibular dental landmarks.