A method for optimizing initial discriminating information extracted from a two-dimensional image of the patient dental arches, referred to as “acquired image”, by a three-dimensional digital reference model of at least one portion of a patient arch, the method including the steps: C1. assessing quality of the initial discriminating information and quality threshold, filtering to keep only the initial discriminating information that has quality higher than the quality threshold, and defining “the discriminating information to be tested” as the initial discriminating information selected; C2. testing consistency between the discriminating information to be tested and reference model; C3. assessing test result and, in accordance with the assessment: adding discriminating information that was not kept to the discriminating information to be tested and/or deleting discriminating information from the discriminating information to be tested, and then returning to step C2. or; defining the optimal discriminating information as the discriminating information to be tested.

Devices, systems, and methods for orthodontic treatment planning and orthodontic treatment are disclosed herein. Various embodiments of the present technology, for example, are directed to a method of obtaining data characterizing movements of a patient's teeth from original positions to desired, final positions. In some embodiments, the method can include identifying one or more components of the movements, evaluating the movements, and/or modifying the movements. A method in accordance with several embodiments of the present technology can comprise obtaining an orthodontic treatment plan, which can include one or more suggested interventions to accomplish the tooth movements, a design of such intervention(s), and/or other useful information regarding the orthodontic treatment. In some embodiments, a method of the present technology comprises evaluating an orthodontic treatment during and/or after implementation of the treatment, which can include obtaining data characterizing current positions of the patient's teeth. Based on the evaluation, the method can include obtaining another orthodontic treatment plan and movement data characterizing movements of a patient's teeth from their current positions to desired, final positions.

Systems and methods of simulating dental treatments are disclosed. A method may include capturing a first 2D image of a patient's face, including the patient's teeth, building a parametric 3D model of the patient's teeth based on the 2D image, developing a simulated outcome of a dental treatment of the patient's teeth by rendering the 3D model with the patient's teeth in one or more positions and/or orientations corresponding to the treatment goals of the dental treatment plan, and rendering a second 2D image of the patient's face with teeth according to a simulated outcome of the dental treatment plan. As noted herein, the dental treatment plan may include orthodontic and/or restorative elements. The simulated outcome may correspond to estimated outcomes and/or intended outcomes of the dental treatment plan.

A method for treating a subject's teeth. A target configuration for the subject's teeth is determined. Receiving features are produced on a dental base in response to the target configuration, the receiving features being configured to receive physical tooth models. The physical tooth models are assembled on the dental base to form a physical arch model. A dental aligner is produced using the physical arch model to move the subject's teeth to the target configuration.

A method and a system for planning an orthodontic treatment are provided. The method comprises: acquiring an arch form 3D digital model including a representation of the given tooth in a current position thereof within a subject's gingiva; determining an initial crown reference point and an initial root reference point; obtaining a target position of the given tooth within the arch form 3D digital model; determining a number of steps for the given tooth to displace from the current position to the target position thereof in the course of the orthodontic treatment; and storing data indicative of the number of steps associated with the given tooth for use in the planning the orthodontic treatment.

Provided herein are methods and apparatuses for analyzing a patient's dental arches in order to generate a treatment plan for the dentition. In particular described herein are methods and apparatuses for determining accurate standardized tooth numbering even when there are missing and/or supernumerary teeth.

Devices, systems, and methods for orthodontic treatment planning and orthodontic treatment are disclosed herein. Various embodiments of the present technology, for example, are directed to a method of obtaining data characterizing movements of a patient's teeth from original positions to desired, final positions. In some embodiments, the method can include identifying one or more components of the movements, evaluating the movements, and/or modifying the movements. A method in accordance with several embodiments of the present technology can comprise obtaining an orthodontic treatment plan, which can include one or more suggested interventions to accomplish the tooth movements, a design of such intervention(s), and/or other useful information regarding the orthodontic treatment. In some embodiments, a method of the present technology comprises evaluating an orthodontic treatment during and/or after implementation of the treatment, which can include obtaining data characterizing current positions of the patient's teeth. Based on the evaluation, the method can include obtaining another orthodontic treatment plan and movement data characterizing movements of a patient's teeth from their current positions to desired, final positions.

A method includes determining, from a first image of a mouth, a first region of the first image comprising a representation of teeth; generating one or more parametric functions associated with tooth color based on color data from the first region; receiving image data comprising new contours of the mouth, wherein one or more of the teeth have a different position in the image data than in the first image; determining a second region comprising the teeth in the image data; and generating a new image based on the image data and the one or more parametric functions, wherein a shape of the teeth is based on the image data and a color of the teeth is based on applying the one or more parametric functions to the second region of the image data.

A method for monitoring the shape of teeth including: producing a three-dimensional digital model of at least one portion of an arch of the patient or “initial reference model”; acquiring at least one two-dimensional image of the arches, referred to as “updated image”, under actual acquisition conditions; analysing each updated image and producing an updated map relating to a piece of discriminating information; optionally determining rough virtual acquisition conditions that approximate the actual acquisition conditions; searching each updated image for a final reference model corresponding to the shape of the teeth, and optionally to the positioning of the teeth, during the acquisition of the updated image; and comparing the shapes of the initial reference model and of the reference model obtained at the end of the preceding steps, referred to as “final reference model”, in order to determine the deformation and/or the movement of teeth between steps a) and b).

A method for manufacturing a transparent aligner for dental alignment is disclosed. The method may include: determining a tooth contour model which includes a contour portion surrounding a surface of a tooth requiring rotational correction; determining an axis of rotation for the tooth requiring rotational correction; determining two points touching exterior surfaces of the tooth requiring rotational correction based on the axis of rotation and a direction of rotation required for correcting the tooth requiring rotational correction, the two points being symmetrical with respect to the axis of rotation; determining a rotational correction model for the rotational correction by protruding the contour portion towards a tooth surface and towards a direction of rotation at the two points; and generating the 3D dental alignment model data by applying the rotational correction model.