de Waard Olivier, Bruggink Robin, Baan Frank, Reukers Hendrikus A J, Bronkhorst Ewald M, Kuijpers-Jagtman Anne Marie, Ongkosuwito Edwin M
Department of Dentistry-Orthodontics and Craniofacial Biology, Radboud University Medical Center, 6500 HB Nijmegen, The Netherlands.
Radboudumc 3D Lab, Radboud Institute for Health Sciences, Radboud University Medical Center, 6500 HB Nijmegen, The Netherlands.
J Clin Med. 2021 Dec 28;11(1):145. doi: 10.3390/jcm11010145.
The purpose of this study was to explore the operator performance of the fabrication of digital orthodontic setups integrated into cone beam computed tomography (CBCT) scans. Fifteen patients who underwent a combined orthodontic-orthognathic surgical treatment were included. The pre-treatment digital dental models and CBCT scans were fused, and four operators made virtual setups twice for all patients. Differences between the virtual setups were calculated by recording tooth crown movement from the pre-treatment model to the virtual setup. To examine performance, Pearson's correlation coefficients, duplicate measurement errors, and inter-operator differences were calculated. For intra-operator performance, correlation values varied among tooth types, with mean correlation values from 0.66 to 0.83 for the maxilla and 0.70 to 0.83 for the mandible. For inter-operator performance, mean correlation values varied from 0.40 to 0.87 for the maxilla and from 0.44 to 0.80 for the mandible. Rotational mean differences exceeded the range of clinical acceptance (>2 degrees) at 18% for the maxilla and 20.8% for the mandible, and translational mean differences exceeded the range of clinical acceptance (0.6 mm) at 9.7% and 26% for the maxilla and mandible, respectively. The intra- and inter-operator performance of digital orthodontic setup construction for virtual three-dimensional orthognathic planning shows significant errors.
本研究的目的是探讨集成于锥形束计算机断层扫描（CBCT）中的数字化正畸排牙的操作人员表现。纳入了15例接受正畸-正颌联合手术治疗的患者。将治疗前的数字化牙模型与CBCT扫描进行融合，4名操作人员为所有患者进行了两次虚拟排牙。通过记录从治疗前模型到虚拟排牙的牙冠移动来计算虚拟排牙之间的差异。为了评估表现，计算了Pearson相关系数、重复测量误差和操作人员间差异。对于操作人员内表现，相关值因牙型而异，上颌的平均相关值为0.66至0.83，下颌为0.70至0.83。对于操作人员间表现，上颌的平均相关值为0.40至0.87，下颌为0.44至0.80。上颌的旋转平均差异在18%时超过临床可接受范围（>2度），下颌为20.8%；上颌的平移平均差异在9.7%时超过临床可接受范围（0.6mm），下颌为26%。用于虚拟三维正颌规划的数字化正畸排牙构建的操作人员内和操作人员间表现显示出显著误差。
