Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
J Healthc Eng. 2020 Feb 14;2020:5739312. doi: 10.1155/2020/5739312. eCollection 2020.
There are various scanners available in dental practice with various accuracies. The aim of this study was to compare the 3D capturing accuracy of scans obtained from Trios 3 and Dental Wings scanner. A reference mandibular model was printed from FormLab with reference points in three axes (, , and and ). The printed model was scanned 5 times with 3 scans: normal scan by Trios 3 (Trios 3A), high-resolution scan by Trios 3 (Trios 3B), and normal scan by Dental Wings. After scan, the stereolithography (stl) files were generated. Then, the measurements were made from the computer software using Rhinoceros 3D (Rhino, Robert McNeel & Associates for Windows, Washington DC, USA). The measurements made with digital caliper were taken as control. Statistical analysis was done using one-way ANOVA with post hoc using Sheffe ( < 0.01). Trios 3 presented higher accuracy than Dental Wings and high resolution showed better results. The Dental Wings showed less accuracy at the measurements >50 mm of length and >30 mm in width. There was no significant difference ( > 0.05) of control with the Trios 3A and Trios 3B. Similarly, for the measurements in -axis, there was no significant difference of control with each scan (Trios 3A, Trios 3B, and Dental Wings). Accuracy of the scan is affected by the length of the scanning area and scanning pattern. It is less recommended to Dental Wings scan >3-unit prosthesis and that crosses the midline.
在牙科实践中有各种具有不同精度的扫描仪。本研究的目的是比较 Trio 3 和 Dental Wings 扫描仪获取的 3D 扫描的准确性。使用 FormLab 从下颌模型打印出带有三个轴上的参考点（ ， ，和 ）的模型。使用 3 种扫描仪对打印模型进行 5 次扫描：Trios 3 的常规扫描（Trios 3A），Trios 3 的高分辨率扫描（Trios 3B）和 Dental Wings 的常规扫描。扫描后，生成立体光刻（stl）文件。然后，使用 Rhinoceros 3D（Rhino，Robert McNeel＆Associates for Windows，华盛顿特区，美国）从计算机软件中进行测量。用数字卡尺进行的测量作为对照。使用单向方差分析（ANOVA）进行统计分析，并使用 Sheffe 进行事后检验（ < 0.01）。Trios 3 的准确性高于 Dental Wings，高分辨率的效果更好。 Dental Wings 在长度超过 50mm 和宽度超过 30mm 的测量中准确性较低。Trios 3A 和 Trios 3B 与对照之间无显著差异（ > 0.05）。同样，在 -轴的测量中，每个扫描（Trios 3A，Trios 3B 和 Dental Wings）与对照之间也没有差异。扫描的准确性受扫描区域的长度和扫描模式的影响。不建议使用 Dental Wings 扫描超过 3 个单位的义齿，并且该义齿要跨过中线。
