Virtual occlusal frame design method for functional occlusal surface of tooth crown bridge

Abstract

The invention provides a virtual occlusal frame design method for a functional occlusal surface of a tooth crown bridge. The method comprises the following steps: S100, constructing a three-dimensional virtual occlusal frame preliminary model by adopting aided design software; S200, detecting, recording and storing skeleton data of the upper jaw, the lower jaw and the temporomandibular joint of the patient, and the three-dimensional track data of the chewing motion; and S300, in combination with the skeleton data of the patient and the three-dimensional trajectory data of the chewing motion, automatically performing virtual occlusion optimization processing on the virtual occlusion frame preliminary model to obtain a three-dimensional virtual occlusion frame model with individual features of the patient. According to the method, the skeleton data and chewing characteristic movement of the personalized upper jaw, lower jaw and temporomandibular joints of the patient are collected, so that accurate and quantitative automatic virtual occlusion detection and automatic virtual occlusion adjustment are realized, repeated adjustment and grinding when the patient tries on the prosthesis are avoided, and the precision and efficiency of manufacturing the prosthesis are greatly improved.

Description

technical field [0001] The invention relates to the technical field of virtual articulator design, in particular to a virtual articulator design method for functional occlusal surfaces of dental crowns and bridges. Background technique [0002] An articulator, also known as an articulator, is an instrument that imitates the upper and lower jaws and temporomandibular joints of the human body to fix the upper and lower jaw models and the occlusal tray, and to a certain extent simulate the movement of the mandible. The model of the patient can be fixed to the articulator, and the patient’s upper and lower jaw height and jaw position relationship can be transferred to the articulator, and the inherent positional relationship of the patient’s upper jaw to the temporomandibular joint can also be transferred to the tooth by means of a face bow. Keep it stable on the occlusal frame, so that the denture production processes such as tooth arrangement, waxing, waxing, and occlusal adju...

AI Technical Summary

Problems solved by technology

However, the currently used virtual articulator design method does not match the patient's maxillary and temporomandibular joints to a high degree, and cannot accurately simulate or reflect the functional occlusal movement of the crown and bridge, and often needs to be repeated many times. It can only be used for the functional occlusal surface of the crown and bridge, and it is also easily affected by human factors. In addition, repeated adjustments and grinding when the patient is trying on the restoration can also easily cause bad experience for the patient.

Images