Systems and methods are disclosed to prevent interference between two physical tooth models in a physical dental arch model by acquiring the coordinates of a plurality of points on the surfaces of each of the two physical tooth models and digitally representing the surfaces of each of the two physical tooth models by a mesh of points in three dimensions using the acquired coordinates. The meshes representing the surfaces of the two physical tooth models intersect at least at one point to form an overlapping portion. The method also includes calculating the depth of the overlapping portion between the two meshes to quantify the interference of the two physical tooth models.

Systems and methods are disclosed to prevent interference between two physical tooth models in a physical dental arch model by acquiring the coordinates of a plurality of points on the surfaces of each of the two physical tooth models and digitally representing the surfaces of each of the two physical tooth models by a mesh of points in three dimensions using the acquired coordinates. The meshes representing the surfaces of the two physical tooth models intersect at least at one point to form an overlapping portion. The method also includes calculating the depth of the overlapping portion between the two meshes to quantify the interference of the two physical tooth models.

One aspect of the present application provides a method for generating 3D digital model of teeth, the method comprises: scanning a patient's teeth with a first feeler gauge inserted in a first gap between two adjacent teeth, to obtain a first 3D digital model; extracting a position and a direction of the first feeler gauge from the first 3D digital model; and modifying the first gap of an original 3D digital model of teeth based on the specification, position and direction of the first feeler gauge, to obtain a refined 3D digital model of teeth.

One aspect of the present application provides a method for generating 3D digital model of teeth, the method comprises: scanning a patient's teeth with a first feeler gauge inserted in a first gap between two adjacent teeth, to obtain a first 3D digital model; extracting a position and a direction of the first feeler gauge from the first 3D digital model; and modifying the first gap of an original 3D digital model of teeth based on the specification, position and direction of the first feeler gauge, to obtain a refined 3D digital model of teeth.

Provided herein are systems and methods for scoring a post-treatment tooth position of a patient's teeth. A patient's dentition may be scanned and/or segmented. Raw dental features, principal component analysis (PCA) features, and/or other features may be extracted and compared to those of other teeth, such as those obtained through automated machine learning systems. A classifier can identify and/or output the post-treatment tooth position of the patient's teeth.

Provided herein are systems and methods for scoring a post-treatment tooth position of a patient's teeth. A patient's dentition may be scanned and/or segmented. Raw dental features, principal component analysis (PCA) features, and/or other features may be extracted and compared to those of other teeth, such as those obtained through automated machine learning systems. A classifier can identify and/or output the post-treatment tooth position of the patient's teeth.

Customized dental appliances are provided having a flexibly resilient shell with cavities shaped to embrace one or more teeth; wherein the shell is shaped so as to envelop at least the crown of the one or more teeth and at least a portion of the gingiva; and wherein the tooth-facing inner wall of said shell comprises one or more protrusions which press against the gingiva and/or one or more cavitation's which produce a pocket in the appliance.

Customized dental appliances are provided having a flexibly resilient shell with cavities shaped to embrace one or more teeth; wherein the shell is shaped so as to envelop at least the crown of the one or more teeth and at least a portion of the gingiva; and wherein the tooth-facing inner wall of said shell comprises one or more protrusions which press against the gingiva and/or one or more cavitation's which produce a pocket in the appliance.

Systems and methods for planning a treatment for a patient’s teeth are provided. In some embodiments, a method includes receiving input data representing an initial tooth arrangement of a patient’s teeth. The method can include determining a target tooth arrangement for the patient’s teeth, the target tooth arrangement including a change in mass of at least one tooth. The method can also include generating a plurality of intermediate tooth arrangements configured to adjust the patient’s teeth from the initial tooth arrangement toward the target tooth arrangement. The method can further include generating instructions to output a visualization showing a difference in tooth mass between at least one intermediate tooth arrangement of the plurality of intermediate tooth arrangements and the target tooth arrangement.

Modelling material which includes (a) at least one radically polymerizable monomer, (b) at least one initiator for the radical polymerization and (c) at least one inert component. The inert component (c) is soluble in the polymer formed by polymerization of the monomer (a), wherein the solubility of component (c) decreases as the temperature increases, with the result that a phase separation takes place above a particular temperature. The material is suitable in particular for the production of models of dental restorations for investment casting processes.