矢状劈开下颌支截骨术后下颌后缩量对咬合力的影响。
The amount of mandibular setback influence on occlusal force following sagittal split ramus osteotomy.
作者信息
Moroi Akinori, Yoshizawa Kunio, Iguchi Ran, Ikawa Hiroumi, Kosaka Akihiko, Hotta Asami, Tsutsui Takamitsu, Saida Yuriko, Ueki Koichiro
机构信息
Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan.
Department of Oral & Maxillofacial Surgery, Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, Japan.
出版信息
J Craniomaxillofac Surg. 2015 Nov;43(9):1743-8. doi: 10.1016/j.jcms.2015.08.015. Epub 2015 Sep 5.
PURPOSE
The purpose of this study was to examine the influence between the magnitude of setback in sagittal split ramus osteotomy (SSRO) and occlusal contact area and bite force without relapse after surgery.
PATIENTS AND METHODS
Sixty female patients with a diagnosis of mandibular prognathism were divided into 3 groups according to the magnitude of setback: group 1 (≤5 mm), group 2 (>5 mm but <10 mm), and group 3 (≥10 mm). All patients underwent skeletal analysis by lateral and frontal cephalogrammetry and measured the occlusal contact area and bite force by the pressure-sensitive system (Dental Prescale, Dental Occlusion Pressuregraph FDP-705; Fuji Photo Film Co., Tokyo, Japan) preoperatively and postoperatively at 1 month, 3 months, 6 months, and 1 year.
RESULTS
There were no significant differences in occlusal contact area and bite force between the 3 groups. Only group 3 showed a significant difference in occlusal contact area and bite force between the preoperative and 1-year measurements.
CONCLUSION
The results indicate that the magnitude of setback did not influence the bite force or occlusal contact area in SSRO.
目的
本研究旨在探讨下颌升支矢状劈开截骨术（SSRO）后退量与术后无复发情况下的咬合接触面积和咬合力之间的影响。
患者与方法
60例诊断为下颌前突的女性患者根据后退量分为3组：第1组（≤5mm），第2组（>5mm但<10mm），第3组（≥10mm）。所有患者术前及术后1个月、3个月、6个月和1年通过头颅侧位和正位X线测量进行骨骼分析，并使用压敏系统（Dental Prescale，Dental Occlusion Pressuregraph FDP - 705；日本东京富士胶片公司）测量咬合接触面积和咬合力。
结果
3组之间的咬合接触面积和咬合力无显著差异。仅第3组在术前和术后1年的测量中，咬合接触面积和咬合力有显著差异。
结论
结果表明，后退量对SSRO中的咬合力或咬合接触面积没有影响。
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