Effect of Scan Pattern on the Accuracy of Complete-Arch Digital Implant Impressions with Two Intraoral Scanners
Effect of Scan Pattern on the Accuracy of Complete-Arch Digital Implant Impressions with Two Intraoral Scanners
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DOI：
10.11607/jomi.9248
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发表时间：
2022-07-01
影响因子：
2
通讯作者：
Chen, Zhuofan
中科院分区：
文献类型：
--
作者：
Li, Zhipeng;Huang, Ruoxuan;Chen, Zhuofan
目的：评价六种扫描模式对两种不同口内扫描仪全弓种植体修复中数字印模的准确性和速度的影响。材料与方法：制作了包含6个平行放置的植入物类似物的主模型，并将6个扫描体连接到类似物上。参考扫描用实验室扫描仪获得。使用3Shape TRIOS 3和Carestream CS 3600口腔内扫描仪进行六种扫描模式的口腔内扫描，获得测试扫描。记录扫描时间。用检测软件对准确性和精密度进行评估。采用双向方差分析（ANOVA）检验扫描方式、扫描仪及其相互作用对扫描精度和扫描时间的影响。每个扫描仪的六种扫描模式之间的差异通过单向方差分析进行检验。两种扫描仪之间的差异通过t检验进行评估。显著性水平设为alpha= 0.05。结果：扫描器、扫描方式及其相互作用对准确性的影响在线性和角度差异上均有显著差异。对于精度，扫描仪和扫描模式各自对线性差异有显著影响，而它们的相互作用没有。只有扫描仪的影响在角度差异上有显著差异。对于两种扫描仪中的每一种，在模式之间的准确性和速度上都检测到显着差异。结论：扫描模式对全弓种植体修复数字印模的准确性和速度有显著影响。
Purpose: To evaluate the effect of six scan patterns on the accuracy and speed of digital impressions with two different intraoral scanners for complete-arch implant rehabilitation. Materials and Methods: A master model containing six parallelly placed implant analogs was fabricated, and six scan bodies were connected to the analogs. Reference scan was obtained with a laboratory scanner. Test scans were obtained by intraoral scanning with six scan patterns using 3Shape TRIOS 3 and Carestream CS 3600 intraoral scanners. Scanning time was recorded. Trueness and precision were assessed with an inspection software. Two-way analysis of variance (ANOVA) was performed to examine the effect of scan pattern, scanner, and their interaction on accuracy and scanning time. Differences between the six scan patterns with each scanner were tested by one-way ANOVA. Differences between the two scanners were evaluated by t test. The level of significance was set at alpha=.05. Results: For trueness, the effects of scanner, scan pattern, and their interaction were significantly different in both linear and angular discrepancy. For precision, the scanner and scan pattern each had a significant effect on linear discrepancy independently, while their interaction did not. Only the effects of scanners were significantly different in angular discrepancy. For each of the two scanners, significant differences were detected in accuracy and speed between the patterns. Conclusion: Scan pattern significantly influenced the accuracy and speed of digital impressions for complete-arch implant rehabilitation.