SYSTEMS AND METHODS FOR DETERMINING AN EDGE OF ORTHODONTIC APPLIANCES

A method and a system for determining a configuration of an open edge for a set of orthodontic appliances are provided. The method comprises: receiving a 3D digital model representative of a surface of a subject's arch form including teeth and a gingiva; obtaining, in the 3D digital model, along a surface of the gingiva, a respective position for a given control point of a plurality of control points, the plurality of control points defining the open edge for a given one of the set of orthodontic appliances; determining, based on the positions of the plurality of control points, a respective vector of positioning values for each of the plurality of control points; storing the respective vector of positioning values for each of the plurality of control points for further use in determining a respective configuration of the open edge for each other one of the set of orthodontic appliances.