Method for individually determining movement locus of lower jaw

Abstract

The invention discloses a method for individually determining the movement locus of the lower jaw. The method comprises the following steps of: 1) through a scanning way, obtaining the three-dimensional diagrams of the upper jaw bone, the upper-row teeth, the lower jaw bone and the lower-row teeth of a patient under different mouth opening states; 2) determining the position of a hinge axis for the lower jaw bone to carry out rotary movement relative to the upper jaw bone; 3) determining the movement locus for the lower jaw bone to carry out the rotary movement relative to the upper jaw bone; 4) determining the movement locus for the lower jaw bone to carry out forward slippage movement relative to the upper jaw bone; 5) determining the movement locus for the lower jaw bone to carry out leftward slippage movement relative to the upper jaw bone; and 6) determining the movement locus for the lower jaw bone to carry out rightward slippage movement relative to the upper jaw bone. By use of the method disclosed by the invention, the movement locus of the lower jaw of the patient can be more accurately and truly obtained so as to truly and individually simulate the lower jaw movement of the patient, and the technical problems in the prior art that since a mechanical real articulator is adopted to simulate the lower jaw movement, operation is complex, simulation accuracy is low and materials, including steel materials, gypsum and the like, need to be consumed can be solved.

Description

technical field [0001] The invention relates to the field of oral cavity technology, in particular to a method for individually determining the movement track of the mandible. [0002] technical background [0003] In the process of mandibular movement, when the mouth is small open, the mandible rotates; when the mouth is large and chewing, the mandibular movement not only includes the rotation of the small opening, but also includes sliding, and the mandibular condyle moves along the temporal bone during sliding. The shape of the upper glenoid fossa makes forward and lateral movements. [0004] Correctly simulating the movement trajectory of the mandible is the key basis for high-quality dental prosthetics, orthodontics and other diagnostic and treatment measures. [0005] In the prior art, the articulator used to simulate the patient's mandibular rotation and sliding is a general-purpose articulator, which can only roughly simulate the trajectory of the patient's mandibula...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a method for individually determining the trajectory of the mandible, so as to solve the existing technical problems of using a mechanical articulator to simulate the trajectory of the mandible

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