Angle Orthod. 2024 Jan 1;94(1):59-67. doi: 10.2319/020623-88.1.
To study whether and how the clinical experience of the operator affects the accuracy of bracket placement using guided bonding devices (GBDs) in vitro.
Five resin models were bonded virtually with brackets, and the corresponding GBDs were generated and three-dimensionally printed. Nine operators, which included three dental students, three orthodontic students, and three orthodontists, bonded the brackets on the resin models using GBDs on a dental mannequin. After being bonded with brackets, the models were scanned, and the actual and designed positions of the brackets were compared.
There was no immediate debonding. The orthodontists spent a significantly shorter time (22.36 minutes) in bracket bonding than the dental students (24.62 minutes; P < .05). The brackets tended to deviate to the buccal side in the dental student group. Linear deviations tended to be smallest in the orthodontic student group, but no significant difference was found among operators with different clinical experience (P > .5). All linear and angular deviations in each group were under 0.5 mm and 2°, respectively.
Clinical experience was positively related to the bonding accuracy using GBDs, especially in the buccolingual dimension. Inexperience also led to longer bonding duration. However, bonding accuracy was clinically acceptable in general.
研究操作人员的临床经验是否以及如何影响使用导弓粘接装置（GBD）在体外放置托槽的准确性。
在五个树脂模型上虚拟粘接托槽，并生成相应的 GBD 并进行三维打印。九名操作人员，包括三名牙科学生、三名正畸学生和三名正畸医生，在牙模上使用 GBD 将托槽粘接到树脂模型上。粘接托槽后，对模型进行扫描，并比较托槽的实际位置和设计位置。
没有立即脱胶。正畸医生完成托槽粘接的时间明显短于牙科学生（22.36 分钟比 24.62 分钟；P<.05）。在牙科学生组中，托槽倾向于向颊侧偏斜。线性偏差在正畸学生组中最小，但不同临床经验的操作人员之间没有发现显著差异（P>.5）。每组的所有线性和角度偏差均小于 0.5 毫米和 2°。
临床经验与使用 GBD 进行粘接的准确性呈正相关，特别是在颊舌向维度上。经验不足也会导致粘接时间延长。但是，总体而言，粘接精度在临床可接受范围内。
