Wanschitz Felix, Birkfellner Wolfgang, Watzinger Franz, Schopper Christian, Patruta Sanda, Kainberger Franz, Figl Michael, Kettenbach Joachim, Bergmann Helmar, Ewers Rolf
Department of Oral and Maxillofacial Surgery, University of Vienna, General Hospital Vienna, Austria.
Clin Oral Implants Res. 2002 Feb;13(1):59-64. doi: 10.1034/j.1600-0501.2002.130107.x.
The overall accuracy of a novel surgical computer-aided navigation system for placement of endosseous implants was evaluated. Five dry cadaver mandibles were scanned using high resolution computed tomography (HRCT). The position of four interforaminal dental implants was planned on the computer screen and transferred to the cadaver mandibles using VISIT, a surgical navigation software developed at the Vienna General Hospital. The specimens were HRCT-scanned again to compare the position of the implants with the preoperative plan on reformatted slices after matching of the pre- and postoperative data sets using the mutual information technique. The overall accuracy was 0.96 +/- 0.72 mm (range 0.0-3.5 mm). No perforation of the mandibular cortex or damage to the mandibular canal occurred. We conclude that computer-aided implant surgery can reach a level of accuracy where further clinical developments are feasible.
对一种用于植入骨内种植体的新型手术计算机辅助导航系统的总体准确性进行了评估。使用高分辨率计算机断层扫描（HRCT）对五具干燥的尸体下颌骨进行扫描。在计算机屏幕上规划四个孔间牙种植体的位置，并使用维也纳总医院开发的手术导航软件VISIT将其转移到尸体下颌骨上。使用互信息技术对术前和术后数据集进行匹配后，再次对标本进行HRCT扫描，以在重新格式化的切片上比较种植体位置与术前计划。总体准确性为0.96±0.72毫米（范围0.0 - 3.5毫米）。未发生下颌骨皮质穿孔或下颌管损伤。我们得出结论，计算机辅助种植手术可以达到一个准确性水平，在此基础上进一步的临床发展是可行的。
