A subapical osteotomy locating guide plate and a manufacture method therefor

Abstract

The invention provides a subapical osteotomy locating guide plate and a manufacture method therefor. The subapical osteotomy locating guide plate belongs to assisting medical instruments. The subapical osteotomy locating guide plate comprises a locating occlusion plate (1), connecting rods (2) and maxillary osteotomy line guide plates (3). The locating occlusion plate (1) is provided with an initial tooth print (11) and is connected with the maxillary osteotomy line guide plates (3) via the connecting rods (2). Each maxillary osteotomy line guide plate (3) is provided with two screw holes (6). The maxillary osteotomy line guide plates (3) are provided with non-circular insertion grooves b (31). One end of each connecting rod (2) matches the corresponding insertion groove b (31). The subapical osteotomy locating plate solves the problem that no intermaxillary bone locating guide device is available in subapical osteotomy. When the subapical osteotomy locating guide plate is applied to assist doctors with surgeries, the current most common complication of subapical osteotomy can be prevented.

Description

technical field [0001] The invention relates to an auxiliary medical device, in particular a positioning guide plate for subapical osteotomy. Background technique [0002] Subapical osteotomy, as a classic orthognathic surgery, is used to treat various jaw deformities, especially for the correction of bony bimaxillary protrusion in adults. Bimaxillary protrusion is one of the common clinical dental and maxillofacial deformities, especially in Guangdong Province of my country. Bimaxillary protrusion often manifests as a convex type (commonly known as "buck teeth"), with protrusion of the upper and lower jaws or alveolar bones, tilting of the upper and lower front teeth, loose labial muscles, open lips and teeth, and the upper and lower lips cannot be closed in a natural state. . Patients often come to see a doctor because of its impact on aesthetics and function. Subapical osteotomy extracts the upper and lower first premolars and retracts the upper and lower front teeth-b...

AI Technical Summary

Problems solved by technology

Since there is no device to assist in positioning the osteotomy line, the following situations are likely to occur during osteotomy during the operation: too many bone fragments are removed, which affects the healing of the broken bone ends, and bone grafting is required; too few bone fragments are removed, which prevents the anterior dentition from being located For terminal positioning splints, it is necessary to repeatedly adjust the anterior and posterior bone blocks until the anterior dentition is completely in place; the outlet of the mental nerve is located below the root tip of the mandibular premolar, and the mandibular osteotomy is easy to damage the mental nerve

[0004] Because the orthognathic doctor cannot directly see the position of the tooth root directly during the operation, the most common complication of subapical osteotomy is damage to the tooth root during the operation, resulting in pulp necrosis, tooth discoloration, tooth loosening, etc., after which endodontic treatment is required 1. Teeth whitening and loose teeth fixation; followed by bone incision too close to the root, resulting in root exposure

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