Temporomandibular joint movement reconstruction method and system thereof

Abstract

The invention provides a temporomandibular joint movement reconstruction method and a system thereof. The method is characterized by collecting an image sequence of a mark point track of open and close mouth mandible movements of a photographed person; determining three-dimensional coordinates of all the mark points on an intraoral fixed mark device in each frame of image, acquiring a movement track of each mark point in a space, and collecting a CBCT image of the intraoral fixed mark device and collecting a CBCT image of the photographed person; registering the mark point of the CBCT image of the intraoral fixed mark device with the mark point acquired by a camera through photographing, and acquiring a transformation matrix of a mark point movement; and using the transformation matrix to carry out rigid body transformation on the CBCT image of the photographed person, acquiring a CBCT image sequence of the photographed person and acquiring a temporomandibular movement image. In the invention, real movement conditions of mandible condyle process and a temporal bone joint surface of a human-body temporomandibular joint can be acquired, the method and the system can be used for auxiliary diagnosis of a temporomandibular joint disease and dynamic analysis of joint motion, temporomandibular joint diagnosis means are increased, doctor diagnosis accuracy and efficiency can be increased, and medical quality and efficiency can be increased too.

Description

technical field [0001] The invention relates to a temporomandibular joint motion reconstruction method and system, belonging to the field of medical optoelectronic applications. Background technique [0002] In recent years, with the development of image technology and the continuous update of clinical auxiliary diagnostic equipment, the emergence, innovation and promotion of optical-based technical equipment have provided favorable conditions for the development of clinical medicine, especially oral and frontal medicine. [0003] At present, the analysis of the temporomandibular joint mainly includes dynamic motion trajectory analysis based on radiographic technology and tracking technology based on facial tracing points. Radiographic imaging techniques can only analyze the articular surfaces and articular processes in a static state, and joint diseases are often a complex and dynamic process, and the factors that can be analyzed through static images are very limited. Alt...

AI Technical Summary

Problems solved by technology

Although the analysis method based on facial tracing can provide dynamic information, it cannot accurately characterize the movement of the joint itself because it will be affected by the surface soft tissue.

However, there is no ready-made device and system for directly reconstructing the real situation of the dynamic motion of the joints. Individuals can use some foreign 3D modeling software for approximate analysis, and the diagnosis of joint diseases today still relies on these imperfect methods. The information uses the doctor's experience to infer the real movement of the temporomandibular joint and then diagnose and treat the disease

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