Method for determining upper and lower jaw positions using individual trays of 3D printed complete dentures

Abstract

In order to solve the problem of low accuracy and efficiency of the traditional method, the invention provides a method for confirming positions of upper and lower jaws by adopting a 3D printing complete denture individual tray. An upper jaw individual tray (1) which is manufactured in the manner of 3D printing is compounded with a gothic arch tracing plate (2), a lower jaw individual tray (4), a gothic arch guide plate (6), a preformed tracing screw (5) and a preformed fixing ring (7). The individual tray is combined with an intraoral gothic arch and is formed at one time in the manner of 3D printing, so that the manufacturing of the individual tray is more simple, convenient and accurate, the mounting and debugging of the gothic arch are avoided, the clinic operation is greatly simplified and a beginner also can skillfully use the gothic arch for confirming the horizontal jaw position relation. Meanwhile, the manufactured individual tray can be utilized to manufacture the final impression.

Description

technical field [0001] The invention relates to a device for determining the positional relationship between upper and lower jaws when complete dentures are restored. Background technique [0002] When the natural dentition exists, the positional relationship between the upper and lower jaws is maintained by the close contact of the upper and lower dentition. When the entire mouth is missing, the lower jaw loses the support of the dentition and the cusp locking, and it will move to various positions. Therefore, in the restoration of complete dentures, it is necessary to determine a stable upper and lower jaw position relationship, that is, the horizontal jaw position relationship. It is generally believed that the centric relationship position, that is, the mandibular condyle is located in the center of the articular fossa, is the only position that can be accurately and repeatedly obtained in the edentulous jaw. The horizontal jaw relationship should be established in the ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of low accuracy and efficiency of the traditional method, the present invention provides a 3D printing, upper jaw individual tray (1) composite Gothic arch tracing board (2), lower jaw individual tray (4), brother Special bow guide plate (6), pre-fabricated tracing screw (5) and pre-fabricated retaining ring (7)

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