Yılmaz Hakan, Özlü Fethiye Çakmak, Karadeniz Carmen, Karadeniz Ersan İlsay
Department of Orthodontics, İstanbul Okan University School of Dentistry, İstanbul, Turkey.
Department of Orthodontics, Ondokuz Mayıs University School of Dentistry, Samsun, Turkey.
Turk J Orthod. 2019 Dec 1;32(4):214-218. doi: 10.5152/TurkJOrthod.2019.19034. eCollection 2019 Dec.
The aim of this study was to compare the accuracy of digital and plaster model methods and the time required for analysis.
A total of 30 subjects (20 females, 10 males; mean age, 14.36±6.30 years), who required plaster models for the construction of either a fixed or a removable orthodontic appliance, were randomly selected. As part of the diagnostic records, digital impressions with a three-dimensional (3D) intra-oral scanner (TriosColor-P13 Shape) were taken from all subjects. Conventional impressions for the orthodontic appliances were taken with alginate (Orthoprint, Zhermack, Italy), and the plaster models were obtained (Scheu-Dental, GmbH.D-58642, Iserlohn, Germany). Two groups were formed. In the conventional measurement group, manual measurements were taken on the plaster models, while in the digital measurement group, the 3Shape OrthoAnalyzer 2013 software was used to make the measurements on the 3D models. In both groups, the total time required to perform the Bolton analysis and space analysis was recorded, and the results were compared.
There was no statistically significant difference found between the two groups in terms of the measurement values. The total time to perform all the analyses was determined to be shorter with digital models compared to conventional plaster models (p<0.001).
The Bolton analysis and space analysis measurements carried out on 3D models did not show any statistically significant difference compared to plaster models. The time taken to perform the analyses was shorter using digital models than for conventional plaster models.
本研究旨在比较数字模型法和石膏模型法的准确性以及分析所需时间。
随机选取30名需要制作固定或可摘矫治器石膏模型的受试者（20名女性，10名男性；平均年龄14.36±6.30岁）。作为诊断记录的一部分，使用三维（3D）口腔内扫描仪（TriosColor-P13 Shape）对所有受试者进行数字印模采集。使用藻酸盐材料（Orthoprint，Zhermack，意大利）制取正畸矫治器的传统印模，并获得石膏模型（Scheu-Dental，GmbH.D-58642，伊瑟隆，德国）。分为两组。在传统测量组中，对石膏模型进行手工测量，而在数字测量组中，使用3Shape OrthoAnalyzer 2013软件对3D模型进行测量。记录两组进行Bolton分析和间隙分析所需的总时间，并比较结果。
两组测量值之间未发现统计学上的显著差异。与传统石膏模型相比，数字模型进行所有分析的总时间更短（p<0.001）。
与石膏模型相比，对3D模型进行的Bolton分析和间隙分析测量未显示出任何统计学上的显著差异。使用数字模型进行分析所需的时间比传统石膏模型短。
