Temporomandibular joint disc anterior displacement model for teaching

Abstract

The invention relates to a temporomandibular joint disc anterior displacement model for teaching, which comprises an upper jaw skull, a lower jawbone and a joint disc, the joint disc is positioned between a joint nodule and a condylar process, the front end of the joint disc is provided with a non-elastic anterior ligament, and the rear end of the joint disc is provided with an elastic posterior ligament; the model further comprises an adjuster arranged at the coracoid position of the lower jawbone, the adjuster comprises adjusting teeth and an adjusting rod arranged on the adjusting teeth, tooth grooves are formed in the sides, connected with the adjusting rod, of the adjusting teeth at intervals in the axial direction, the adjusting rod is connected with the anterior ligament of the joint disc, and the adjusting rod moves in the axial direction of the adjusting teeth. The joint disc is driven to move forwards between the joint nodule and the condylar process, and the normal joint disc state, the renaturable joint disc forward displacement state and the non-renaturable joint disc forward displacement state are simulated; the posterior ligament of the joint disc is connected with the posterior upper wall bone of a glenoid fossa to drive the joint disc to return. The problems that a special model is lacked at present, and temporomandibular joint disc anterior displacement symptoms are difficult to explain and display to students and patients can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of teaching models, in particular to a model of anterior disc displacement of temporomandibular joints for teaching. Background technique [0002] The temporomandibular joint is one of the most complicated joints in the human body. Because the ligaments in the posterior area of ​​the joint disc are weak and easily damaged, chronic injuries, mental factors, occlusal disorders and other factors may lead to joint structural disorder, which is manifested as anterior displacement of the joint disc. The rate of temporomandibular joint diseases accounted for the first. Temporomandibular joint disc anterior displacement often causes clinical symptoms such as limited opening, opening deviation, or occlusal pain. Due to the lack of vivid teaching aids, it is difficult to express clearly when teaching students or explaining the condition to patients. Therefore, it is urgent to design a A new technical solution to comp...

AI Technical Summary

Problems solved by technology

Anterior disc displacement of the temporomandibular joint often causes clinical symptoms such as limited opening, deviation of the opening, or occlusal pain. Due to the lack of vivid teaching aids, it is difficult to express clearly when teaching students or explaining the condition to patients. Therefore, it is urgent to design a A new technical solution to comprehensively solve the problems existing in the existing technology

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