Forensic Dentistry Lab, Centro de Investigación en Odontología Legal y Forense -CIO-, Facultad de Odontología, Universidad de La Frontera, Temuco, 4780000, Chile; Master's Program in Dentistry, Facultad de Odontología, Universidad de La Frontera, Temuco, 4780000, Chile.
Forensic Dentistry Lab, Centro de Investigación en Odontología Legal y Forense -CIO-, Facultad de Odontología, Universidad de La Frontera, Temuco, 4780000, Chile.
Arch Oral Biol. 2020 Jan;109:104575. doi: 10.1016/j.archoralbio.2019.104575. Epub 2019 Sep 24.
The aims of this study were to assess the reliability, reproducibility and validity of mesiodistal and buccolingual measurements comparing these measurements collected using an electronic hand-held digital calliper, on dry dentitions and on dental casts, with measurements obtained from 3D digital models created using a portable intra-oral scanner.
The mesiodistal and buccolingual diameter of the crown of 1304 teeth were measured on dry dentitions and on dental casts, and secondly on 3D digital models created using an intra-oral 3D scanner. Reliability, reproducibility and validity were evaluated using the intraclass correlation coefficient (ICC) and the Bland-Altman graphic method.
The results of the intraclass correlation coefficient expressed an excellent degree of agreement in the intra- and inter-observer error analysis, as well as in the comparison of the mesiodistal and buccolingual dimensions taken with the calliper and those taken in digital 3D models. The results of the Bland-Altman method showed that the greatest differences were found in the mesiodistal diameter of the molars and in the buccolingual diameter of the upper premolars.
Mesiodistal and buccolingual measurements obtained from digital 3D models are suitable for recording dentitions for forensic purposes.
本研究旨在评估使用电子手持数字卡尺对干燥牙列和牙模进行的近远中径和颊舌径测量值与使用便携式口内扫描仪创建的 3D 数字模型获得的测量值之间的可靠性、可重复性和有效性。
在干燥牙列和牙模上以及其次在使用口内 3D 扫描仪创建的 3D 数字模型上测量 1304 颗牙的冠近远中径和颊舌径。使用组内相关系数（ICC）和 Bland-Altman 图形法评估可靠性、可重复性和有效性。
内-观察者和间-观察者误差分析以及卡尺测量的近远中径和颊舌径与数字 3D 模型测量值之间的比较的组内相关系数结果表明，存在极好的一致性。Bland-Altman 方法的结果表明，磨牙的近远中径和上颌前磨牙的颊舌径差异最大。
数字 3D 模型获得的近远中径和颊舌径测量值适用于记录法医学牙列。
