Skeletal Relapse After Mandibular Setback in Bi Max Surgery: Intraoral Vertical Ramus versus Bilateral Sagittal Split Osteotomies

被引：7
作者：
Al-Delayme R.M.A. [1 ,2 ]
Al-Khen M. [3 ]
机构：
[1] Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Al-Rafidain University College, Baghdad
[2] Oral and Maxillofacial Surgery Department, AL-Yarmuk Teaching Hospital, Baghdad
[3] Oral and Maxillofacial Surgery Department, Damascus Hospital, Ministry of Health, Damascus
来源：
Journal of Maxillofacial and Oral Surgery | 2014年 / 13卷 / 4期
关键词：
B point; Bilateral sagital split osteotomy (BSSO); Pogonion; Relapse; Vertical ramus osteotomy (IVRO);
D O I：
10.1007/s12663-013-0555-y
中图分类号：
学科分类号：
摘要：
Objectives: This study aimed to measure and compare the postoperative horizontal and vertical changes (relapse) that occur at B point and pogonion after intraoral vertical ramus osteotomy (IVRO) without fixation and bilateral sagittal split osteotomy (BSSO) with semi rigid internal fixation in bimax surgery. Materials and Methods: Eleven patients with skeletal class III malocclusion mandibular prognathism and maxillary hypoplasia were chosen. Six cases underwent BSSO; and five IVRO. All patients underwent Lefort I osteotomy without genioplasty. Result: Postoperative changes (relapse) of B-point and pogonion in horizontal and vertical axes from 1 week post operatively (T0) to 1 year post operatively (T2) were assessed and the percentage of relapse of each point and each axis was compared. It was noted that the horizontal relapse in IVRO was 27.7 % at B point and 40.6 % at pogonion while, in BSSO group it was noted that the horizontal relapse was 28.1 % at B point and a greater number i.e., 40.9 % at pogonion. Conclusion: The percentage of horizontal relapse after IVRO without fixation is equal to that after BSSO with semi rigid internal fixation. © 2013, Association of Oral and Maxillofacial Surgeons of India.
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页码：471 / 477
页数：6
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