Patent ID: 11903789
Assignee: OXILIO LTD
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 16:
17. A system for determining a position of an orthodontic attachment on a surface of a given tooth of a subject, the system including:
at least one processor and
at least one non-transitory computer-readable memory storing executable instructions, which, when executed by the at least one processor cause the system to:
acquire a 3D digital model of a subject's arch form, the 3D digital model including a plurality of vertices representing surfaces of a plurality of the subject's teeth of the subject, including a surface of the given tooth;
determine, along the surface of the given tooth, a work area for positioning thereon the orthodontic attachment, by:
obtaining a jaw curve extending through each one of the plurality of subject's teeth along the 3D model of the subject's arch form;
determining a reference plane extending through the given tooth, in a buccolabial direction thereof, perpendicularly to the jaw curve; and
identifying vertices on the surface of the given tooth for which an angular difference between a normal vector to the surface at a given vertex and the reference plane is lower than or equal to a predetermined angular threshold value;

determine, within the work area, a reference vertex as being representative of a boundary of a space within the work area for positioning therein the orthodontic attachment; and
store data of the reference vertex of the work area for further use in determining the position of the orthodontic attachment on the surface of the given tooth.