Bionic reconstruction method for positions and postures of tooth spaces in occlusion function state

Abstract

The present invention relates to a bionic reconstruction method for positions and postures of tooth spaces in an occlusion function state. The bionic reconstruction method comprises the following steps: 1) respectively scanning an upper jaw dentition and a lower jaw dentition of a patient by using an intraoral three-dimensional scanner to obtain three-dimensional data J1 and J2; 2) scanning the whole dentition of upper and lower jaw teeth of the patient after occlusion by a normal strength by using the intraoral three-dimensional scanner to obtain three-dimensional data J0; 3) extracting three-dimensional data of a crown part of each tooth in the J1 and J2 in a software; and 4) registering the extracted crown data of each tooth to the J0. The bionic reconstruction method can realize the bionic positions and postures of the tooth spaces in the occlusion function state. On the basis of an existing oral cavity three-dimensional scanning technology, the bionic reconstruction method furtherimproves precision of obtaining the positions and postures of all tooth spaces in the individual occlusion function state, and thus improves the precision of a design scheme for diagnosis and treatment of oral cavity based on the data.

Description

technical field [0001] The invention relates to tooth space position and posture digital information, in particular to a bionic reconstruction method of tooth space position and posture under occlusal function state. Background technique [0002] The occlusal force exerts pressure on the teeth, resulting in deformation of the non-rigid structure of the periodontal ligament and alveolar bone, causing tooth displacement. Studies have shown that under a horizontal force of 5N, the displacement of normal incisors is 100-120 μm, and that of molars is 40-80 μm, and there are large individual differences. However, in the past hundred years, the impact of this factor on the accuracy of the spatial position and attitude information of the teeth recorded in the impression has not been considered when making dental impressions in clinical practice, resulting in restorations made based on such impressions not being completely suitable for patients. The occlusal function requires a lot ...

AI Technical Summary

Problems solved by technology

Studies have shown that under a horizontal force of 5N, the displacement of normal incisors is 100-120 μm, and that of molars is 40-80 μm, and there are large individual differences.

However, in the past hundred years, the influence of this factor on the accuracy of the spatial position and posture information of the teeth recorded in the impression has not been considered when making dental impressions in clinical practice, resulting in restorations made based on such impressions not being completely suitable for patients. The occlusal function requires a lot of clinical adjustments