Department of Prosthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Türkiye.
Mechatronics Engineering Department, Engineering Faculty, Erciyes University, Kayseri, Türkiye.
J Oral Implantol. 2024 Aug 1;50(4):426-430. doi: 10.1563/aaid-joi-D-24-00054.
The optimal scan pattern for full-arch digital implant impressions remains to be determined. This study aimed to analyze the effects of different scan patterns on the trueness of intraoral scanners for full-arch digital implant impressions. A maxillary plaster model with 4 implant analogs was employed as the master model. Scan bodies were attached to the master model and scanned with a laboratory scanner to obtain reference data. Test scans were obtained using 3 different scan patterns with Cerec Primescan and Trios 3. Each test datum was superimposed onto the reference data. The trueness was assessed by determining the 3D distance and angular deviations between the test and reference data. Significant differences in 3D distance deviation were detected among the scan patterns for both scanners. Significant differences in angle deviation were detected among the scan patterns for the Cerec Primescan, whereas it was not substantial for the Trios 3. Cerec Primescan exhibited superior trueness across all scan patterns compared with Trios 3. The zigzag pattern resulted in more accurate scans for the Cerec Primescan, whereas both the zigzag and occlusal-palatal-buccal patterns showed higher accuracy for the Trios 3.
全口数字化种植导板的最佳扫描模式仍有待确定。本研究旨在分析不同扫描模式对全口数字化种植导板口内扫描仪准确性的影响。采用带有 4 个种植体模拟体的上颌石膏模型作为标准模型。将扫描体附着在标准模型上，使用实验室扫描仪进行扫描以获取参考数据。使用 Cerec Primescan 和 Trios 3 进行 3 种不同的扫描模式进行测试扫描。将每个测试数据叠加到参考数据上。通过确定测试数据和参考数据之间的三维距离和角度偏差来评估准确性。两种扫描仪的扫描模式之间在三维距离偏差上存在显著差异。Cerec Primescan 的扫描模式之间在角度偏差上存在显著差异，而 Trios 3 则不明显。与 Trios 3 相比，Cerec Primescan 在所有扫描模式下都表现出更高的准确性。对于 Cerec Primescan，锯齿形模式产生更准确的扫描结果，而对于 Trios 3，锯齿形和咬合-腭-颊形模式都显示出更高的准确性。
