International Display Workshops General Incorporated Association

[3Dp1-2] A Study for Retrieving Teeth Gingival Margin from Three-Dimensional Digital Model

*Rui-Bin Chern1、Tzung-Han Lin1 (1.National Taiwan University of Science and Technology (Taiwan))

Curvature, Gingival margin, DBSCAN, Clear aligners, 3D point cloud

https://doi.org/10.36463/idw.2022.0585

Gingival margin (GM) identifies the necessary portion when people manufacture clear aligners. In automatic manufacturing system, it is considered as a three-dimensional (3D) line which needs to be cut and separated. This study proposes a model analysis method which is able to determine the 3D coordinate points of the patient's gingival margin based on curvature information.