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Determination of orthodontic bracket and tooth adaptation using an X-ray micro-computer tomography scanner

机译：使用X射线微型计算机断层扫描仪确定正畸支架和牙齿的适应性

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摘要

The determination of the orthodontic brackets’ adaptation to the curvatures of teeth is a difficult topic to study. The complexity arise due to the different designs of their fitting surfaces, margins and curvatures of orthodontic brackets. Teeth on the other hand have variation in their curvatures and the question remains how well an orthodontic brackets truly adapt to the teeth. Previous methods from the literature determined the curvature of teeth through the superimposition of circular templates onto dental plaster models as well as the use of acrylic arcs of various diameters. Here the authors describe a method to compare the curvatures obtained from an industrial X-ray micro-computer tomography scanner and processing software of orthodontic brackets and plaster casts of teeth. Three orthodontic brackets could be assessed by establishing co-ordinate points of proposed standardized landmarks on the orthodontic brackets. These standardized landmarks from each orthodontic bracket can be applied onto the various plaster teeth that was scanned. The adaptation of the three brackets to the various teeth can be compared by looking at their radii and angles that were determined in this method.
机译：确定正畸托槽对牙齿曲率的适应性是一个很难研究的话题。复杂性的产生是由于它们的安装表面，正畸托槽的边缘和曲率的不同设计。另一方面，牙齿的曲率会发生变化，问题是正畸托槽如何真正适应牙齿。文献中的先前方法是通过将圆形模板叠加到牙膏模型上以及使用各种直径的丙烯酸弧来确定牙齿的曲率。在这里，作者描述了一种比较从工业X射线微计算机断层扫描仪和正畸托槽和牙膏石膏处理软件获得的曲率的方法。通过在正畸托槽上建立建议的标准化界标的坐标点，可以评估三个正畸托槽。可将来自每个正畸托架的这些标准化界标应用于已扫描的各种石膏牙齿。可以通过查看在此方法中确定的半径和角度来比较三个托槽对各种牙齿的适应性。

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