Wuxi Ea Medical Instruments Technologies Limited

Xiaolin Liu

Yang Feng

Bowen Zhou

Jing Wang

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.

Method for setting a local coordinate system of a tooth 3D digital model

In one aspect, the present application provides a computer-based method of measuring positional relationship between two teeth, comprising: obtaining a second 3D digital model representing a plurality of teeth under a second tooth arrangement, wherein the plurality of teeth comprise a first tooth and a second tooth; and measuring a value of a collision or a size of a gap between the first tooth and second tooth based on the second 3D digital model and in a predetermined first direction.

Computer-based method for measuring positional relationship between two teeth

A method for segmenting 3D digital model of jaw is provided. The method includes: obtaining a first 3D digital model of jaw; and segmenting the first 3D digital model of jaw using a trained deep artificial neural networks.

Method for segmenting 3D digital model of jaw

A method for reconstructing joined part surfaces of two adjacent teeth of a 3D digital model of teeth is provided. The method includes: obtaining a 3D digital model of teeth which includes adjacent first tooth and second tooth having joined surfaces; identifying a set of intersection points of the joined surfaces; fitting a first plane using the set of intersection points; identifying a set of first control points from points on the 3D digital model of teeth near the set of intersection points basis curvature, where the set of first control points defines boundary of a first part surface of the first tooth to be reconstructed; reconstructing the first part surface using a linear equation system constructed basis the first plane and the set of first control points.

Growing community of inventors

Shanghai, China

Xiaolin Liu