Faculty of Oral and Dental Medicine, Oral & Maxillofacial Surgery Department, Cairo University, Cairo, Egypt.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2013 Feb;115(2):e16-25. doi: 10.1016/j.oooo.2011.09.035. Epub 2012 May 22.
The objective of this study was to evaluate the efficacy of a novel tooth/bony-supported virtual splint design to control the maxillary vertical, rotational, and anteroposterior intraoperative movements.
A tooth/bone-borne splint was designed to position the osteotomized maxilla intraoperatively. Lateral cephalometric radiographs were obtained 1 week before the operation and 1 week after to compare the planned and actual movements of the maxilla.
The paired t test showed no significant difference between the planned and actual movements in both the vertical and horizontal measurements (P ≤ .05). The difference between the planned and actual horizontal movements in 4 (66.7%) of the 6 patients was 1 mm or less. For the vertical movements, 5 (83.3%) of the 6 patients showed a difference equal to or less than 1 mm.
The 2-piece surgical stent showed accurate control on the osteotomized maxilla and succeeded its repositioning to the preplanned positions.
本研究旨在评估一种新型的牙/骨支持式虚拟夹板设计在控制上颌垂直向、旋转和前后向术中运动的效果。
设计了一种牙/骨支抗夹板，以在术中定位截骨后的上颌骨。在术前 1 周和术后 1 周获取侧位头颅侧位片，以比较上颌骨的计划和实际运动。
配对 t 检验显示，在垂直和水平测量方面，计划运动与实际运动之间无显著差异（P≤0.05）。6 例患者中有 4 例（66.7%）的计划与实际水平运动差值为 1 毫米或以下。对于垂直运动，6 例患者中有 5 例（83.3%）的差值等于或小于 1 毫米。
两部分式手术支架对上颌骨截骨部位具有精确的控制作用，并成功地将其重新定位到预先计划的位置。
