Department of Dental Science, Graduate School, Kyungpook National University, Daegu, Republic of Korea.
Advanced Dental Device Development Institute, Kyungpook National University, 2177 Dalgubuldaero, Jung-Gu, Daegu, 41940, Republic of Korea.
Sci Rep. 2024 Mar 4;14(1):5291. doi: 10.1038/s41598-024-55711-4.
This study aimed to measure marginal and internal fit using images captured with both an optical microscope and a smartphone camera, comparing the fit measurement performance of these devices and analyzing their correlation. Working casts (with 10 posterior and 10 anterior teeth) created to fabricate fixed dental prostheses were used. These working casts were scanned using a desktop scanner (E1) to design an interim crown, and the designed interim crown was fabricated using a three-dimensional (3D) printer. Utilizing the silicone replica technique, the fabricated interim crown replicated the fit, which was then captured using both an optical microscope and a smartphone camera. The captured images were used to measure the marginal and internal fit according to the imaging device. Intraclass correlation coefficients (ICC) were used for reliability analysis according to the imaging device. Furthermore, the Wilcoxon signed-rank test was adopted for the comparative evaluation of the marginal and internal fit between the imaging devices (α = 0.05). The measurement results of the marginal and internal fit according to the optical microscope and smartphone camera did exhibit a significant difference (P < 0.05). The ICC between the two devices showed an "excellent" agreement of over 0.9 at all measurement points (P < 0.001). A smartphone camera could be used to obtain images for evaluating the marginal and internal fit.
本研究旨在通过使用光学显微镜和智能手机相机拍摄的图像来测量边缘和内部适合度，比较这些设备的适合度测量性能，并分析它们之间的相关性。使用制作固定义齿的工作模型（包括 10 个后牙和 10 个前牙）。这些工作模型使用桌面扫描仪（E1）进行扫描，以设计临时冠，然后使用三维（3D）打印机制造临时冠。利用硅橡胶复制技术，制造出临时冠的复制件，然后使用光学显微镜和智能手机相机拍摄。根据成像设备拍摄的图像来测量边缘和内部适合度。根据成像设备，采用组内相关系数（ICC）进行可靠性分析。此外，还采用 Wilcoxon 符号秩检验对两种成像设备的边缘和内部适合度进行了比较评价（α=0.05）。光学显微镜和智能手机相机测量的边缘和内部适合度结果存在显著差异（P<0.05）。两种设备之间的 ICC 在所有测量点均显示出“优秀”的一致性，超过 0.9（P<0.001）。智能手机相机可用于获取评估边缘和内部适合度的图像。
