BACKGROUND:Technological progress has led to the transition to digital methods to perform surgical planning and to obtain surgical splints with CAD/CAM technologies. The present study aimed to compare the accuracy of jaw repositioning in bimaxillary orthognathic surgery using traditional and digital surgical planning in skeletal class III patients. METHODS:This study included 60 skeletal class III patients divided into two groups based on the method used to perform surgical planning: traditional (T, n = 30) and digital (D, n = 30). For each patient, a 2D presurgical Visual Treatment Objective (VTO) was prepared and the outcome of the surgery was compared with that planned by using determined cephalometric measurements (ANB, SNA, SNB, Ar-Go-Me, S-Ar-Go). Statistical analysis showed that the measurements planned and those obtained after surgery were equivalent in Group D. For Group T, the analysis showed equivalence only for one of the considered measurements (ANB). By comparing the results of the two groups, Group D presented a lower level of error than Group T. CONCLUSIONS:Digital surgical planning performed significantly better in terms of accuracy of jaw repositioning than the traditional protocol.

译文

背景:技术进步已导致向数字方法的转变,以执行手术计划并使用CAD / CAM技术获得手术夹板。本研究旨在比较传统的和数字化外科手术计划在三级骨骼正畸患者中双颌正颌外科手术中颌骨重新定位的准确性。
方法:这项研究包括60例III类骨骼肌患者,根据执行手术计划的方法分为两组:传统(T,n = 30)和数字(D,n = 30)。为每位患者准备了二维手术前视觉治疗目标(VTO),并通过确定的头颅测量值(ANB,SNA,SNB,Ar-Go-Me,S-Ar-Go)将手术结果与计划的结果进行了比较。统计分析表明,计划的测量值和手术后获得的测量值在D组中是相同的。对于T组,分析仅显示了一种考虑的测量值(ANB)的等效性。通过比较两组的结果,D组的错误水平低于T组。
结论:在数字化外科手术计划方面,与传统手术方案相比,颌骨重新定位的准确性显着提高。

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