Al-Kurwi Ali S A, Bos Annemieke, Kuitert Reinder B
Department of Orthodontics, Academic Centre for Dentistry of Amsterdam, Amsterdam, The Netherlands.
Department of Orthodontics, Academic Centre for Dentistry of Amsterdam, Amsterdam, The Netherlands.
Am J Orthod Dentofacial Orthop. 2017 Feb;151(2):277-283. doi: 10.1016/j.ajodo.2016.06.046.
The aim of this study was to use a microsensor to investigate the association among overjet reduction, treatment duration, and wear time of the van Beek activator.
The study sample comprised patients (n = 28) with a mean age of 11.60 (±1.25) years at start of treatment treated with the van Beek activator. The prescribed wear time was 12 hours per day. The evaluation period was limited to the first 3 appointments. The wear times during the 3 intervals were assessed. Treatment periods with good compliance were characterized by a wear time of 8 hours or more per day.
The medians of overjet were 9.00 mm at the start of treatment and 5.75 mm at the third appointment. The mean total wear time throughout the evaluation period was 7.75 (±3.66) hours per day. Significant correlations were found at the 3 intervals. Patients with a mean wear time of 8 hours or more per day achieved significantly greater overjet reductions. Patients with good compliance of at least 5 months showed significantly greater overjet reductions.
Significant overjet reduction was achieved with a minimum daily wear time of 8 hours for at least 5 months. The level of compliance had a strong tendency to be maintained throughout the treatment period. No patient achieved the prescribed wear time of 12 hour per day.
本研究的目的是使用微传感器来研究覆牙合减小、治疗持续时间与范·贝克矫治器佩戴时间之间的关联。
研究样本包括28例在开始使用范·贝克矫治器治疗时平均年龄为11.60（±1.25）岁的患者。规定的佩戴时间为每天12小时。评估期限于前3次就诊。评估了3个时间段的佩戴时间。依从性良好的治疗期的特征是每天佩戴时间为8小时或更长。
治疗开始时覆牙合的中位数为9.00毫米，第三次就诊时为5.75毫米。整个评估期的平均总佩戴时间为每天7.75（±3.66）小时。在3个时间段均发现了显著相关性。每天平均佩戴时间为8小时或更长的患者覆牙合减小更为显著。依从性良好至少5个月的患者覆牙合减小更为显著。
每天最少佩戴8小时，持续至少5个月，覆牙合得到显著减小。在整个治疗期间，依从性水平有很强的维持趋势。没有患者达到规定的每天12小时佩戴时间。
