期刊
INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY
卷 47, 期 10, 页码 1316-1321出版社
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.ijom.2018.05.013
关键词
facial changes; intraoral vertical ramus osteotomy; osseous healing; sagittal split ramus osteotomy
The sagittal split ramus osteotomy (SSRO) is generally associated with greater postoperative stability than the intraoral vertical ramus osteotomy (IVRO); however, it entails a risk of inferior alveolar nerve damage. In contrast, IVRO has the disadvantages of slow postoperative osseous healing and projection of the antegonial notch, but inferior alveolar nerve damage is believed to be less likely. The purposes of this study were to compare the osseous healing processes associated with SSRO and IVRO and to investigate changes in mandibular width after IVRO in 29 patients undergoing mandibular setback. On computed tomography images, osseous healing was similar in patients undergoing SSRO and IVRO at 1 year after surgery. Projection of the antegonial notch occurred after IVRO, but returned to the preoperative state within 1 year. The results of the study indicate that IVRO is equivalent to SSRO with regard to both bone healing and morphological recovery of the mandible.
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