The use of a wax bite wafer and a double computed tomography scan procedure to obtain a three-dimensional augmented virtual skull model
The use of a wax bite wafer and a double computed tomography scan procedure to obtain a three-dimensional augmented virtual skull model
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DOI：
10.1097/scs.0b013e31805343df
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发表时间：
2007-05-01
影响因子：
0.9
通讯作者：
Schutyser, Filip
中科院分区：
文献类型：
--
作者：
Swennen, Gwen R. J.;Mommaerts, Maurice Y.;Schutyser, Filip
在正颌和面部正形外科的三维虚拟计划设置中，咬合关系的详细可视化是必不可少的。这项研究的目的是介绍和评估使用蜡片结合双重计算机断层扫描(CT)程序，以增强三维虚拟模型的头骨与详细的牙齿表面。共有10名正颌患者在标准化的多层螺旋CT扫描方案后进行扫描，减少了剂量，并将蜡片放在适当的位置。然后，使用高分辨率标准化多层螺旋CT扫描方案，分别扫描每个患者的上、下牙弓和蜡咬片的印模。利用迭代最近点进行曲面匹配，精确地拟合蜡咬片上的虚拟印模。连续地，对患者扫描上的蜡片进行基于硬性点的自动配准，以将数字虚拟牙弓实现到患者的头骨模型中(Maxilim，2.0版；Medicim NV，St-Niklaas，比利时)。概率误差直方图显示以下误差
A detailed visualization of the interocclusal relationship is essential in a three-dimensional virtual planning setup for orthognathic and facial orthomorphic surgery. The purpose of this study was to introduce and evaluate the use of a wax bite wafer in combination with a double computed tomography (CT) scan procedure to augment the three-dimensional virtual model of the skull with a detailed dental surface. A total of 10 orthognathic patients were scanned after a standardized multislice CT scanning protocol with dose reduction with their wax bite wafer in place. Afterward, the impressions of the upper and lower arches and the wax bite wafer were scanned for each patient separately using a high-resolution standardized multislice CT scanning protocol. Accurate fitting of the virtual impressions on the wax bite wafer was done with surface matching using iterative closest points. Consecutively, automatic rigid point-based registration of the wax bite wafer on the patient scan was performed to implement the digital virtual dental arches into the patient's skull model (Maxilim, version 2.0; Medicim NV, St-Niklaas, Belgium). Probability error histograms showed errors of