Mathematical shape matching as a tool in tooth wear assessment - development and conduct
Mathematical shape matching as a tool in tooth wear assessment - development and conduct
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DOI：
10.1046/j.1365-2842.1998.00324.x
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发表时间：
1998-12-01
影响因子：
2.9
通讯作者：
Chadwick, RG
中科院分区：
文献类型：
--
作者：
Mitchell, HL;Chadwick, RG
修复和牙齿磨损的定量评估通常需要固定的参考点来进行测量。在患者的纵向随访中，这些点的丢失或侵蚀可能会妨碍测量，另一种方法是在磨损表面前后的数字模型中寻找重合和冲突的区域，不断改进坐标变换的参数，直到找到它们之间最接近的对应关系。已经编写了一个计算机程序来实现该算法，并评估该技术在人工生成的牙齿表面和从不同时期患者记录的牙齿复制品中找到匹配的能力。该程序能够达到预期的目的，展示了该技术在牙齿磨损评估中的实用性，但确定了进一步改进程序以提高其差异检测能力和自动化水平的必要性。对理论和实践经验的考察强调了在某些情况下，用户理解对于确保令人满意的解决方案是无价的。这加强了研究人员反对依赖基于商业的表面拟合程序的决心，这些程序的基础可能尚未完全了解。尽管如此，这种表面匹配在牙齿磨损的调查中是一个强大的工具。
The quantitative assessment of restoration and tooth wear usually requires fixed reference points from which measurements are made. in longitudinal patient follow-up the loss or erosion of such points may preclude measurement and an alternative approach is to seek regions of coincidence and conflict in digital models of before and after wear surfaces, with a continuous refinement of the parameters of the coordinate transformations, until the closest correspondence between them is found. A computer program has been written to implement the algorithm and assess the technique's capacity to find the match between surfaces both artificially generated and from tooth replicas recorded from patients at different epochs. The program was able to achieve the desired ends, demonstrating the utility of the technique in tooth wear assessment but identifying the need to refine the program further to enhance both its difference detection capabilities and level of automation. Examination of the theory and practical experience highlighted certain situations when user understanding is invaluable to ensure a satisfactory solution. This strengthened the investigators' resolve against reliance upon commercially based surface fitting programs whose basis may not be fully understood. Notwithstanding this surface matching is a powerful, tool in the investigation of dental wear.