A kind of preparation method of mandibular angle osteotomy navigation template

Abstract

The invention discloses a mandible angle osteotomy navigation template preparation method, and the method comprises the steps: (1), building a virtual mandible three-dimensional model; (2), designing an osteotomy line; (3), marking an osteotomy initial body, registering the initial body, and obtaining a thickened registered body and a thickened osteotomy body; (4), carrying out the local Boolean addition of the thickened registered body and the thickened osteotomy body through employing the local Boolean operation, enabling the thickened registered body and the thickened osteotomy body to become an integrated navigation template, and carrying out the smoothening of the external surface; (5), obtaining a mandible angle osteotomy navigation template, and opening a 2.5mm*2.5mm window at a second molar position of the mandible angle osteotomy navigation template. The method provided by the invention is simple in preparation of the mandible angle osteotomy navigation template, and the template is provided with an effective registering part, wherein the registering part can accurately determine the position of the template.

Description

technical field [0001] The invention relates to the technical field of mandibular angle osteotomy, in particular to a preparation method of a mandibular angle osteotomy navigation template. Background technique [0002] With the improvement of material living standards, people's demand for beauty continues to increase, and the requirements for many plastic surgery operations have reached a new height. Mandibular angle osteotomy plastic surgery is to change the lower facial contour by cutting off the posterior edge of the mandible, the mandibular angle, and the lower edge of the mandible. For this type of osteotomy that requires symmetrical operations on the face, the accuracy of the osteotomy during the operation and the symmetry of the facial bones after the operation are often the key to determining the final plastic surgery effect. [0003] The intraoral approach has gradually become the most ideal surgical approach due to its advantage of no scars. However, due to the n...

AI Technical Summary

Problems solved by technology

The navigation template has the following defects: (1) The operation can only be performed through an extraoral incision, and the postoperative scar remains

(2) The navigation template is not effectively fixed, and the operation of the instrument is likely to cause the template to shift, thereby reducing the accuracy of the osteotomy operation

The mandibular angle navigation template designed by Niansong Ye et al.: (1) The intraoral incision approach is adopted, and the "hook"-shaped protrusion on the template is used for fixation, which is still not reliable. In actual surgical operations, the operation of instruments may easily cause the template to shift. thereby reducing the accuracy of the osteotomy

(2) When placing the navigation template on the surface of the mandibular angle, it is impossible to determine whether the template is in the correct position (due to factors such as soft tissue obstruction), which increases the uncertainty of the osteotomy operation

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