Computed tomography evaluation of risk factors for an undesirable buccal split during sagittal split ramus osteotomy

Autor: Yasuyuki Fujii, Ayano Hatori, Miwa Horiuchi, Tomoko Sugiyama-Tamura, Hayato Hamada, Risa Sugisaki, Yuki Kanno, Marika Sato, Michihide Kono, On Hasegawa, Yoko Kawase-Koga, Daichi Chikazu
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: PLoS ONE, Vol 18, Iss 3 (2023)
Druh dokumentu: article
ISSN: 1932-6203
Popis: Sagittal split ramus osteotomy (SSRO) sometimes induces an irregular split pattern referred to as a bad split. We investigated the risk factors for bad splits in the buccal plate of the ramus during SSRO. Ramus morphology and bad splits in the buccal plate of the ramus were assessed using preoperative and postoperative computed tomography images. Of the 53 rami analyzed, 45 had a successful split, and 8 had a bad split in the buccal plate. Horizontal images at the height of the mandibular foramen showed that there were significant differences in the ratio of the forward thickness to the backward thickness of the ramus between patients with a successful split and those with a bad split. In addition, the distal region of the cortical bone tended to be thicker and the curve of the lateral region of the cortical bone tended to be smaller in the bad split group than in the good split group. These results indicated that a ramus shape in which the width becomes thinner towards the back frequently induces bad splits in the buccal plate of the ramus during SSRO, and more attention should be paid to patients who have rami of these shapes in future surgeries.
Databáze: Directory of Open Access Journals
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