Feasibility and Accuracy of Noncontact Three-Dimensional Digitizers for Geometric Facial Defects: An In Vitro Comparison
Feasibility and Accuracy of Noncontact Three-Dimensional Digitizers for Geometric Facial Defects: An In Vitro Comparison
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DOI：
10.11607/ijp.5855
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发表时间：
2018-11-01
影响因子：
2.3
通讯作者：
Taniguchi, Hisashi
中科院分区：
文献类型：
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作者：
Aswehlee, Amel M.;Elbashti, Mahmoud E.;Taniguchi, Hisashi
目的：评价非接触式三维(3D)数字化系统获取面部缺损的可行性和准确性。材料和方法：以高精度工业计算机断层扫描为参考扫描，数字化面部缺损的石块模型。该模型还使用了四种不同类型的非接触式3D数字化仪进行扫描：带有摄像系统的激光光束分割技术和三种不同的立体摄影测量系统。用相应的软件进行三维重建，并保存为标准三角化语言(STL)文件。使用3D评估软件对3D数据集进行几何评估，并与参考数据进行比较。Kruskal-Wallis H检验用于评估不同扫描之间绝对3D偏差的差异，统计学意义定义为P<；0.05。结果：4种非接触式三维数字化系统对面部缺损模型的数字化是可行的，尽管4种数字化系统的三维中位偏差不同。不同数字化仪间的精确度有显著差异(P<；.001)。结论：应用各种非接触式三维数字化设备对面部缺损模型进行数字化处理是可行的，且以激光切割技术最为准确。需要进一步的研究来评估患者面部缺陷的数字化，以临床验证这项研究的结果。
Purpose: To evaluate the feasibility and accuracy of noncontact three-dimensional (3D) digitization systems for capturing facial defects. Materials and Methods: A stone model of a facial defect was digitized using high-accuracy industrial computed tomography as a reference scan. The model was also scanned using four different types of noncontact 3D digitizers: a laser beam light-sectioning technology with camera system and three different stereophotogrammetry systems. All 3D images were reconstructed with corresponding software and saved as standard triangulated language (STL) files. The 3D datasets were geometrically evaluated and compared to the reference data using 3D evaluation software. Kruskal-Wallis H tests were performed to assess differences in absolute 3D deviations between scans, with statistical significance defined as P < .05. Results: The four noncontact 3D digitization systems were feasible for digitizing the facial defect model, although the median 3D deviation of the four digitizers varied. There was a significant difference in accuracy among the digitizers (P < .001). Conclusion: Digitization of facial defect models using various noncontact 3D digitizers appears to be feasible and is most accurate with laser beam light-sectioning technology. Further investigations assessing digitization of facial defects among patients are required to clinically verify the results of this study.