Department of Preventive Dentistry, Kyungpook National University School of Dentistry, Daegu 41940, Korea.
Department of Orthodontics, School of Medicine, Ewha Womans University, Seoul 07985, Korea.
Int J Environ Res Public Health. 2021 May 16;18(10):5282. doi: 10.3390/ijerph18105282.
The aim of the study was to study how the presence or the type of the orthodontic brackets influence the time measurement and accuracy of impressions using a digital oral scanner. The same models were divided into the control group (the model without a bracket), MB group (the model with a metal bracket), and CB group (the model with a monocrystalline bracket). Subsequently, scanning was conducted five times for each model using the Trios Pod 2. Simultaneously, the duration for taking the digital impression was measured. The degree of accuracy was compared among the three groups. As compared with the control group, scanning took 53.3 s longer in the MB group and 194.23 s longer in the CB group. In the canine and the first molar, the mean values of errors were compared between the left and right sides; in both the canine and the first molar, errors between the control group and the CB group were the greatest. Following a comparison of the duration and accuracy of the impressions between the three groups, our results suggest that its degree was the highest in the CB group where a monocrystalline bracket was attached.
本研究旨在研究正畸托槽的存在或类型如何影响使用数字口腔扫描仪进行印模的时间测量和准确性。将相同的模型分为对照组（无托槽模型）、MB 组（金属托槽模型）和 CB 组（单晶托槽模型）。随后，使用 Trio Pod 2 对每个模型进行五次扫描。同时，测量获取数字印模的时间。比较三组之间的准确性。与对照组相比，MB 组扫描时间延长了 53.3 秒，CB 组延长了 194.23 秒。在尖牙和第一磨牙中，比较左右两侧的平均误差值；在尖牙和第一磨牙中，对照组和 CB 组之间的误差最大。比较三组印模的时间和准确性后，我们的结果表明，附着单晶托槽的 CB 组的程度最高。
