A method of using a central relationship position demonstration device

Abstract

A centric relation position demonstration device comprises a base plate, an upper rack, a lower jaw simulation rack, an upper dental cast, and a lower dental cast; the application method comprises thefollowing steps: A, preparing the upper dental cast and the lower dental cast according to teaching demands; B, fitting the upper dental cast with the lower dental cast; C, enabling the upper and lower dental casts to form centric bite, and observing motion relations in the centric bite; D, simulating different centric relation positions, and observing influences on biting relations by differentcentric relation positions. The centric relation position demonstration device application method can directly display teeth biting relation changes caused by changes of position relations between a condyle and an articular fossa, thus providing clear and direct feelings for dentistry students and oral cavity clinic doctors to understand and analyze the centric relation positions.

Description

technical field [0001] The invention relates to the field of teaching aids, in particular to a method for using a central relationship position demonstration device. Background technique [0002] figure 1 It is a schematic diagram of the bone structure of the human head, see figure 1 As shown, the median relationship is the positional relationship between the lower jaw 101 and the upper jaw 102, and is the positional relationship of the condyle 103 in the glenoid fossa. When the teeth of the upper and lower jaws cannot determine a stable relationship between the upper and lower jaws, the only stable connection position available between the upper and lower jaws is the positional relationship between the condyle 103 and the glenoid fossa. Therefore, the centric relationship can be used clinically to establish a centric occlusion. There are many definitions of the median relationship, and there are seven editions of definitions in "The Glossary of Prosthodontic Terms". The...

AI Technical Summary

Problems solved by technology

[0005] In the process of stomatology teaching and training, the teaching aids used are usually commercially available oral orthopedic models, or articulators are used to show the theoretical position of the centric relationship position and the centric occlusal relationship, but the condyle of the common commercially available oral orthopedic models The position is usually fixed and cannot be changed, and the articulator is used to convert the central relationship position and the central occlusal position according to the specific tooth plaster model, so the display of the condyle position by the articulator is not intuitive

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