Department of Oral and Maxillofacial Surgery, Section of Dentistry, Armed Forces Capital Dental Hospital, Armed Forces Medical Command, Seongnam.
Department of Biostatistics, Korea University College of Medicine, Seoul.
J Craniofac Surg. 2021 Oct 1;32(7):2441-2445. doi: 10.1097/SCS.0000000000007578.
The authors analyzed the three-dimensional postoperative condylar position change across the plating systems. This retrospective study was conducted with the patients who underwent bilateral sagittal split ramus osteotomy with setback surgery. The condylar change was analyzed from preoperative cone-beam computed tomography to postoperative 1 month (T1) and postoperative 6 months (T2) using superimposition software, automatically merging based on the anterior cranial base. The condylar changes during T1 and T2 were analyzed across the four types of plates (4-hole sliding, heart-shaped, 3-hole sliding, and 4-hole conventional) Mean intraclass correlation coefficient values were consistently high for each measurement (>0.850). During T1, the conventional plate had a decreased condylar anterior distance when compared with the 3-hole sliding plate (P = 0.032). During T2, the conventional plate had an increased condylar posterior distance when compared with the 3-hole sliding plate (P = 0.031). Superimposition software based on the anterior cranial base could be available for measurement of condylar position with highly reproducible results. After bilateral sagittal split ramus osteotomy, the 3-hole sliding plate could effectively compensate for the anterior displacement of the condyle compared to other plates.
作者分析了各个钢板系统中术后髁突三维位置的变化。这项回顾性研究纳入了接受双侧下颌升支矢状劈开后退术的患者。使用叠加软件，基于前颅底，对术前锥形束 CT 到术后 1 个月（T1）和术后 6 个月（T2）的髁突变化进行分析。对 4 种类型的钢板（4 孔滑动型、心形、3 孔滑动型和 4 孔常规型）的髁突变化进行分析。各项测量的组内相关系数均较高（>0.850）。在 T1 时，与 3 孔滑动钢板相比，常规钢板的髁突前距减小（P=0.032）。在 T2 时，与 3 孔滑动钢板相比，常规钢板的髁突后距增加（P=0.031）。基于前颅底的叠加软件可用于测量髁突位置，其结果具有高度可重复性。在双侧下颌升支矢状劈开后退术后，与其他钢板相比，3 孔滑动钢板可有效补偿髁突的前移位。
