An orthodontic aligner includes a first plastic segment having a first shape that fits over a first portion of a dental arch of a patient, a second plastic segment having a second shape that fits over a second portion of the dental arch of the patient, and a connector that joins the first plastic segment to the second plastic segment. The connector is configured to be disposed along a lingual side of one or more additional teeth of the patient without exerting a clinically significant force on the one or more additional teeth. The connector spans a gap between the first plastic segment and the second plastic segment, the gap corresponding to the one or more additional teeth that are not to receive the clinically significant force. The connector includes a flexible material that will perform at least one of flex, move or change shape responsive to applied forces.

A method of scanning an oral cavity including: acquiring, using an intraoral scanner (IOS) head, without changing a position of the IOS head, a first image of a first region of interest (ROI) and a second image of a second ROI where the first and the second ROIs are of different portions of a dental arch of the oral cavity and do not overlap; reconstructing depth information for the first and the second ROI; and generating a single model of the dental arch by combing the depth information.

In one aspect of the present application, a computer-implemented method for setting a local coordinate system of a tooth 3D digital model is provided, the method comprises: obtaining a first 3D digital model representing a first tooth, wherein the first 3D digital model is based on a world coordinate system; and setting a local coordinate system for the first 3D digital model using a first artificial neural network based on the first 3D digital model, where the first artificial neural network is a trained deep learning artificial neural network.

Systems and methods for generating a three-dimensional (3D) model of a user's dental arch based on two-dimensional (2D) images of dental impressions include a model training system that provides a machine learning model using training image(s) of a dental impression of a respective dental arch and a 3D training model of the respective dental arch. A model generation system receives first image(s) of a first dental impression of a user's dental arch and second image(s), which may be of the first dental impression or a second dental impression of the dental arch. The model generation system generates a first and second 3D model of the dental arch by applying the first image(s) and second image(s) to the machine learning model.

A method and computer program for designing straightening aligners are disclosed. The method for designing straightening aligners according to an exemplary embodiment of the present invention includes generating current alignment information representing a patient's current tooth alignment state, and generating orthodontic alignment information for multiple orthodontic steps that are reached sequentially by correcting the current alignment information, wherein generating the orthodontic alignment information sets the multiple orthodontic steps such that the total sum of orthodontic forces applied to the patient's teeth per one orthodontic step is less than or equal to a preset total sum of orthodontic forces in order to reach a tooth alignment state corresponding to the orthodontic alignment information of each orthodontic step.

The invention relates to a method for producing a dental aid from a thermoplastic film or plate, wherein a digital three-dimensional working model is created in a computer-aided manner using a three-dimensional data set of at least one part of an upper jaw and/or lower jaw.

A device comprising an orthodontic or dental appliance for use with a system for information management in dentistry, a system for storing and managing dentistry data such as information about an orthodontic or dental treatment of a person using a private network and a method for information management in dentistry are described.

A method for providing an orthodontic appliance includes: a step of creating three-dimensional data for an auxiliary mouthpiece and three-dimensional data for an orthodontic mouthpiece based on an intraoral shape and a shape and a bonding position of a protruding piece to be bonded to an orthodontic target tooth; a step of forming, based on the three-dimensional data for the auxiliary mouthpiece, the auxiliary mouthpiece including a recessed portion that corresponds to the protruding piece; and a step of forming, based on the three-dimensional data for the orthodontic mouthpiece, the orthodontic mouthpiece including a pressing portion that comes into contact with the protruding piece.

Systems for force measurement upon orthodontic appliances are described. Generally, a system for measuring a force or moment imparted by an orthodontic appliance may comprise a dentition mold having one or more target teeth each formed upon a fixture and which is movable independently of the dentition mold, a measurement sensor coupled to the fixture, and a processor in communication with the measurement sensor. An orthodontic appliance may be configured for placement upon the dentition mold where the orthodontic appliance imparts a force or moment upon the one or more target teeth such that the force or moment is transmitted to the measurement sensor via the fixture for measurement of the force or moment.

The present disclosure includes computing device related, systems, and methods for IPR planning as described herein. One method includes identifying a first tooth and a second tooth in a digital dental model with an overlap in a target final position in a treatment plan and identifying a reference line on each of the first tooth and the second tooth; revising the treatment plan wherein a position of each of the first tooth and the second tooth is determined in which the reference line of each of the first tooth and the second tooth are aligned and the first tooth and second tooth are not overlapping; and prescribing IPR based on the determined position of each of the first tooth and the second tooth.