目的:采用三维测量方法分析下颌前突患者双侧下颌骨升支矢状劈开术(BSSRO)后颏唇区轮廓变化。方法:纳入16名下颌前突患者,手术方式为BSSRO或BSSRO+Le Fort I型截骨术。收集术前1周(T0)、术后6~8个月(T1)螺旋CT数据,使用mimics软件建模...目的:采用三维测量方法分析下颌前突患者双侧下颌骨升支矢状劈开术(BSSRO)后颏唇区轮廓变化。方法:纳入16名下颌前突患者,手术方式为BSSRO或BSSRO+Le Fort I型截骨术。收集术前1周(T0)、术后6~8个月(T1)螺旋CT数据,使用mimics软件建模并导入3-matic软件拟合、测量颏唇区软硬组织标志点三维移动距离及下唇区、颏部和颏唇区体积变化。并对颏唇区软、硬组织标志点移动距离、各分区体积变化和平均移动距离行Pearson相关性和线性回归分析。结果:颏唇区软硬组织标志点在三维方向变化均有显著相关性(P<0.01)。下唇区及颏部软硬组织体积变化以及平均移动距离均有显著相关性(P<0.05)。结论:下颌前突患者BSSRO术后颏唇区软硬组织变化在三维方向均有显著相关性,且能够准确预测。展开更多
目的:研究双侧下颌支矢状劈开术(BSSRO)中保留凹陷侧近心端骨板联合双皮质螺钉固定法在矫正面部不对称畸形中应用价值。方法:选择2013年1月—2013年7月间在上海交通大学医学院附属第九人民医院行正颌手术治疗的8例成年偏突颌畸形患者作...目的:研究双侧下颌支矢状劈开术(BSSRO)中保留凹陷侧近心端骨板联合双皮质螺钉固定法在矫正面部不对称畸形中应用价值。方法:选择2013年1月—2013年7月间在上海交通大学医学院附属第九人民医院行正颌手术治疗的8例成年偏突颌畸形患者作为研究对象,术前进行临床检查和三维CT检查,确定双侧咬肌区的不对称情况,术中常规行BSSRO和(或)上颌骨Le Fort I型截骨术。在下颌骨旋转后退后,肥大侧去除近心端多余骨板行4孔小钛板固定,凹陷侧保留近心端多余骨板用双皮质螺钉固定。术后3个月检查患者面部对称性的改善情况,并通过正位片测量、计算患者手术前、后两侧结构的对称性,评估该方法的有效性。利用SPSS 20.0软件包对数据进行配对t检验。结果:8例患者的面部不对称性均得到很好改善,未出现钛钉脱落、骨块移位和复发等情况。手术前、后患者面部对称性相关指标的差值具有统计学意义(P<0.05)。结论:BSSRO中保留凹陷侧近心端骨板联合双皮质螺钉固定法能更有效地矫正面部不对称畸形,可安全应用。展开更多
Aim: This study was performed to evaluate the movement of the proximal segment following different methods of ramus osteotomy that is one of the side effects of orthognathic surgery. Theoretically, with intraoral vert...Aim: This study was performed to evaluate the movement of the proximal segment following different methods of ramus osteotomy that is one of the side effects of orthognathic surgery. Theoretically, with intraoral verticosagittal ramus osteotomy, it can minimize the movement of the proximal segment. The changes in the intergonal distance of mandible and the angle of the ramus flaring in two methods of osteotomy have been compared in this study. Materials and Methods: In this randomized clinical trial, included 60 patients (32 males) with mandibular prognathism and without any asymmetry were selected and divided into two groups (n = 30). One group underwent bilateral sagittal split ramus osteotomy technique to achieve mandibular setback and the other by the intraoral verticosagittal ramus osteotomy technique. Intergonial width and inner-ramal angle in the transverse plane were measured on radiographs preoperatively and 1 and 12 weeks postoperatively. Data were analyzed using covariance test with the significance level set at P 0.1). Conclusion: Considering our findings, there was no significant difference between two ramus osteotomy techniques regarding changes in mandibular width and inter-ramal flaring angle.展开更多
文摘目的:采用三维测量方法分析下颌前突患者双侧下颌骨升支矢状劈开术(BSSRO)后颏唇区轮廓变化。方法:纳入16名下颌前突患者,手术方式为BSSRO或BSSRO+Le Fort I型截骨术。收集术前1周(T0)、术后6~8个月(T1)螺旋CT数据,使用mimics软件建模并导入3-matic软件拟合、测量颏唇区软硬组织标志点三维移动距离及下唇区、颏部和颏唇区体积变化。并对颏唇区软、硬组织标志点移动距离、各分区体积变化和平均移动距离行Pearson相关性和线性回归分析。结果:颏唇区软硬组织标志点在三维方向变化均有显著相关性(P<0.01)。下唇区及颏部软硬组织体积变化以及平均移动距离均有显著相关性(P<0.05)。结论:下颌前突患者BSSRO术后颏唇区软硬组织变化在三维方向均有显著相关性,且能够准确预测。
文摘目的:研究双侧下颌支矢状劈开术(BSSRO)中保留凹陷侧近心端骨板联合双皮质螺钉固定法在矫正面部不对称畸形中应用价值。方法:选择2013年1月—2013年7月间在上海交通大学医学院附属第九人民医院行正颌手术治疗的8例成年偏突颌畸形患者作为研究对象,术前进行临床检查和三维CT检查,确定双侧咬肌区的不对称情况,术中常规行BSSRO和(或)上颌骨Le Fort I型截骨术。在下颌骨旋转后退后,肥大侧去除近心端多余骨板行4孔小钛板固定,凹陷侧保留近心端多余骨板用双皮质螺钉固定。术后3个月检查患者面部对称性的改善情况,并通过正位片测量、计算患者手术前、后两侧结构的对称性,评估该方法的有效性。利用SPSS 20.0软件包对数据进行配对t检验。结果:8例患者的面部不对称性均得到很好改善,未出现钛钉脱落、骨块移位和复发等情况。手术前、后患者面部对称性相关指标的差值具有统计学意义(P<0.05)。结论:BSSRO中保留凹陷侧近心端骨板联合双皮质螺钉固定法能更有效地矫正面部不对称畸形,可安全应用。
文摘Aim: This study was performed to evaluate the movement of the proximal segment following different methods of ramus osteotomy that is one of the side effects of orthognathic surgery. Theoretically, with intraoral verticosagittal ramus osteotomy, it can minimize the movement of the proximal segment. The changes in the intergonal distance of mandible and the angle of the ramus flaring in two methods of osteotomy have been compared in this study. Materials and Methods: In this randomized clinical trial, included 60 patients (32 males) with mandibular prognathism and without any asymmetry were selected and divided into two groups (n = 30). One group underwent bilateral sagittal split ramus osteotomy technique to achieve mandibular setback and the other by the intraoral verticosagittal ramus osteotomy technique. Intergonial width and inner-ramal angle in the transverse plane were measured on radiographs preoperatively and 1 and 12 weeks postoperatively. Data were analyzed using covariance test with the significance level set at P 0.1). Conclusion: Considering our findings, there was no significant difference between two ramus osteotomy techniques regarding changes in mandibular width and inter-ramal flaring angle.
