SU1463243A1 - Method of surgical treatment of prognathia of the lower jaw - Google Patents

Abstract

This invention relates to surgical dentistry. The purpose of the invention is to prevent recurrence. In the anterior part of the middle third of the jaw branch, a triangular protrusion with a base horizontally above the mandibular orifice equal to the value of the sagittal displacement of the mandible back is formed through a through cut. Cutting is continued horizontally by a length equal to the base of the triangular protrusion to create a locking system.

Description

one

This invention relates to medicine, in particular to dental surgery, and concerns the surgical treatment of excessive development of the mandible.

The aim of the invention is to prevent recurrence by improving the fixation of the fragments.

The method is carried out as follows.

From the submandibular incision round the angle of the mandible, the distance from the edge of 1.5-2.0 cm. Expose the branch of the jaw. Cut through the periosteum along the lower edge of the jaw and skeletonize the jaw branch from the outside to the middle third of its height. In the anterior region, on the border of the upper third of the jaw branch, a through-cut with the help of the fissure bur forms a triangular protrusion with a base along the horizontal line above the mandibular orifice equal to the amount of sagittal displacement of the lower jaw back. A through cut is then continued horizontally on a length equal to the base of the triangular protrusion. Then, the cut is made slantwise down, cutting only the outer cortical plate to the angle of the jaw. For sagittal

the cleavages are cut along the rear edge of the branch and a partial horizontal cut with a fissure bur of the inner cortical plate before joining with a through cut.

With a flat bit, the branch of the jaw is split into two fragments: a large one with a triangular protrusion and a small one. Similarly, an operation is performed on the opposite side of the branch of the jaw.

After moving large fragments back, the jaws are fixed in the orthognathic occlusion with rubber rings by the tooth splint. To create a wide contact of the fragments with the spongy surface, a section of the outer cortical lamina of the large fragment is resected by the amount of overlapping of the small fragment. To prevent recurrence due to the displacement of a large fragment to its former position, a triangular area is resected on a small fragment of M in shape and size equal to the triangular protrusion on a large fragment. After mixing a large fragment backwards, a locking system is formed here. On the posterior surface of the branch, an excess of cortical plate is resected, thereby

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form the angle of the jaw. A bone suture is applied to the bone fragments. Wound ears

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Claims (1)

Invention Formula A method of surgical treatment of mandibular progression through intercortical osteotomy of the mandible branch, moving it backward, setting teeth in orthognathic occlusion and subsequent fixation of fragments, characterized in that, in order to prevent recurrence due to improved fixation of fragments, a locking system is created; sagittal displacement of the lower jaw back.