Postgraduate School of Orthodontics, University of Ferrara, Via Fossato di Mortara, 44100, Ferrara, Italy.
Department of Biomedical Sciences and Health, University of Milan, Milan, Italy.
Prog Orthod. 2017 Nov 13;18(1):35. doi: 10.1186/s40510-017-0190-0.
The aim of this study was to evaluate the predictability of F22 aligners (Sweden & Martina, Due Carrare, Italy) in guiding teeth into the positions planned using digital orthodontic setup.
Sixteen adult patients (6 males and 10 females, mean age 28 years 7 months) were selected, and a total of 345 teeth were analysed. Pre-treatment, ideal post-treatment-as planned on digital setup-and real post-treatment models were analysed using VAM software (Vectra, Canfield Scientific, Fairfield, NJ, USA). Prescribed and real rotation, mesiodistal tip and vestibulolingual tip were calculated for each tooth and, subsequently, analysed by tooth type (right and left upper and lower incisors, canines, premolars and molars) to identify the mean error and accuracy of each type of movement achieved with the aligner with respect to those planned using the setup.
The mean predictability of movements achieved using F22 aligners was 73.6%. Mesiodistal tipping showed the most predictability, at 82.5% with respect to the ideal; this was followed by vestibulolingual tipping (72.9%) and finally rotation (66.8%). In particular, mesiodistal tip on the upper molars and lower premolars were achieved with the most predictability (93.4 and 96.7%, respectively), while rotation on the lower canines was the least efficaciously achieved (54.2%).
Without the use of auxiliaries, orthodontic aligners are unable to achieve programmed movement with 100% predictability. In particular, although tipping movements were efficaciously achieved, especially at the molars and premolars, rotation of the lower canines was an extremely unpredictable movement.
本研究旨在评估 F22 隐形矫治器（瑞典和 Martina，Due Carrare，意大利）在引导牙齿进入数字化正畸治疗方案中计划位置的可预测性。
选择了 16 名成年患者（6 名男性和 10 名女性，平均年龄 28 岁 7 个月），共分析了 345 颗牙齿。使用 VAM 软件（Vectra，Canfield Scientific，Fairfield，NJ，USA）对治疗前、理想治疗后（数字化治疗方案中计划的）和实际治疗后模型进行分析。计算每颗牙齿的预定和实际旋转、近远中倾斜和颊舌倾斜，并按牙齿类型（右上和左上、右下和左下切牙、尖牙、前磨牙和磨牙）进行分析，以确定使用隐形矫治器获得的每种运动类型的平均误差和准确性与使用治疗方案计划的运动类型相比。
使用 F22 隐形矫治器获得的运动的平均可预测性为 73.6%。近远中倾斜的可预测性最高，为理想值的 82.5%；其次是颊舌倾斜（72.9%），最后是旋转（66.8%）。特别是上颌磨牙和下颌前磨牙的近远中倾斜实现了最高的可预测性（分别为 93.4%和 96.7%），而下颌尖牙的旋转则实现得最差（54.2%）。
不使用辅助工具，正畸矫治器无法实现 100%可预测的治疗方案。特别是，虽然倾斜运动得到了有效实现，尤其是在上颌磨牙和前磨牙，但下颌尖牙的旋转运动是极不可预测的。
