Three-dimensional accurate positioning machine for upper jaws

Abstract

The invention provides a three-dimensional accurate positioning machine for upper jaws, and relates to the field of medical apparatuses. The positioning machine comprises cantilevers, a connecting shaft, a spacer and an elasticity cap, wherein two cantilevers and one spacer are sequentially mounted on a thread shaft from bottom to top, the elasticity cap is arranged above the spacer and is connected with the thread shaft, a middle shaft outer sleeve pipe is in threaded connection with a limiting cylinder, a middle shaft is arranged in the middle shaft outer sleeve pipe, and a sliding rod and auniversal head are sequentially arranged in the limiting pipe from the head end to the tail end; and the elasticity cap is screwed down downwards, a middle shaft can maintain the original state, thespacer and the middle shaft outer sleeve pipe move downwards and the sliding rod and the universal head move outwards, and finally, various components of the positioning machine cannot move. The invention further provides an orbital plane indicator and an inserting groove cooperating with the three-dimensional accurate positioning machine for upper jaws for use. The three-dimensional accurate positioning machine for upper jaws can guarantee that the maxillary tooth occlusal plane and the orbitomeatal plane are parallel, the maxillary tooth row midline and the facial midline are consistent, andthe problem that bite plane and superior tooth midline are oblique after an operation can be solved.

Description

technical field

[0001] The invention relates to the field of oral medical instruments, in particular to a three-dimensional precise locator for maxillary bone. Background technique

[0002] Skeletal dentofacial deformity is a kind of abnormal maxillofacial shape and occlusal relationship disorder caused by the growth and development of maxillofacial bones. The positional relationship is out of balance. At present, the main treatment method for adults with moderate and severe skeletal dento-maxillofacial deformities is orthodontics-orthognathic combined orthodontics, that is, to correct the abnormal jaw position relationship through orthognathic surgery, and to achieve a good occlusion through orthodontic treatment. In order to achieve the goal of diagnosis and treatment, it is necessary to accurately locate the relationship between the upper and lower jaws during orthognathic surgery, and adjust the abnormal jaw position to the direction and position designed before surgery...

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