骨格性下顎前突症を伴う顎関節円板後方転位および前方転位に対し下顎枝垂直骨切り術が奏効した1例

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  • A Case of Posterior and Anterior Disc Displacement with Mandibular Prognathism Improved after Intraoral Vertical Ramus Osteotomy

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In this paper, a mandibular prognathism with posterior disc displacement in TMJ performed intraoral vertical ramus osteotomy (IVRO) was reported. The patient was an 18-year-old female with the chief complaint of difficulty in mouth closing. Posterior disc displacement in left TMJ and anterior disc displacement in right TMJ were found by MRI examination. Although splint therapy and arthrocente-sis in left TMJ were performed, the symptoms did not change. This patient underwent IVRO after preoperative orthodontic treatment. After sugery, bilateral disc position and the symptoms of difficulty in mouth opening and TMJ pain were improved.

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