Abstract: Methods, systems, and apparatuses are described for generating an interdental filler model for a patient. Locations for ends of the interdental filler model may be determined. A curvature of the interdental filler model may be determined. A shape of the interdental filler model may be determined. A first arc may be determined for a first end of the interdental filler model and a second arc may be determined for a second end of the interdental filler model. A set of arcs may be interpolated between the first arc and the second arc. The set of arcs may be grounded on the patient's gingiva. The interdental filler model may be generated based on the set of arcs.

Abstract: Methods and systems for determining an orthodontic treatment for a subject are provided. The methods comprises: acquiring a 3D representation of an arch form including that of a gingiva of the subject; obtaining a plurality of segmentation loops; determining, between each pair of adjacent segmentation loops of the plurality of segmentation loops, a midpoint, thereby generating a plurality of primary midpoints; based on the plurality of midpoints, generating a primary central curve; generating, based on the primary central curve, a first inner mesh curve and a first outer mesh curve; generating a first segment of the reconstructed 3D representation of the gingiva by joining each one from the plurality of primary midpoints with respective ones from the first plurality of inner midpoints and from the first plurality of outer midpoints; and causing display of the first segment of the reconstructed 3D representation of the gingiva.

Abstract: A method for determining a jaw curve for orthodontic treatment planning for a patient, the method being executable by a processor. The method includes obtaining a tooth and gingiva mesh from image data associated with teeth and surrounding gingiva of the patient, the mesh being representative of a surface of the teeth and the surrounding gingiva; obtaining a tooth contour of each tooth, the tooth contour being defined by a border between a visible portion of each tooth and the surrounding gingiva; determining a tooth contour center of each tooth, the tooth contour center of a given tooth being an average point of the tooth contour of the given tooth; projecting the tooth contour center of each tooth onto a jaw plane; and fitting the tooth contour center of each tooth to a curve to determine the jaw curve.

Abstract: A method and a system for determining a cut line of an aligner are provided. The method comprises: obtaining 3D model data of a plurality of teeth and a gingiva of a subject; obtaining, using the 3D model data, for each one of the plurality of teeth, a respective one of a plurality of individual intersection loops; segmenting, based on a predetermined rule, each one of the plurality of individual intersection loops into at least a buccal portion and a lingual portion; sequentially joining respective buccal portions and respective lingual portions associated with each one of the plurality of individual intersection loops, thereby generating a single arch form loop; smoothing the single arch form loop, thereby generating a smoothed single arch form loop; and applying the smoothed single arch form loop to an unfinished aligner to indicate the cut line on the unfinished aligner for producing the aligner.