Durbin D S, Sadowsky C
Am J Orthod Dentofacial Orthop. 1986 Nov;90(5):375-82. doi: 10.1016/0889-5406(86)90003-x.
Occlusal contacts in maximum intercuspation were examined in 38 patients at the end of the active phase of orthodontic treatment and again 3 months into the retention phase to assess the initial posttreatment occlusal changes. The sample consisted of 23 patients with conventional retainers and 15 patients with gnathological rubber tooth positioners. Polyether rubber impression bites were used to record occlusal contacts. The locations of the contacts were then transferred to study models. In the combined sample (N = 38), the total number of contacts increased 14% over the 3-month period. This was due entirely to an increase in the number of contacts on posterior teeth (premolars and molars). Those cases with fewer teeth in contact at the end of treatment developed more teeth in contact over the 3-month period. Although the group retained with positioners demonstrated a greater gain in the total number of teeth in contact over time when compared with the group with conventional retainers, the additional gain was minimal.
在正畸治疗活跃期结束时，对38例患者的最大牙尖交错位咬合接触进行了检查，并在保持期3个月后再次检查，以评估治疗后初期的咬合变化。样本包括23例使用传统保持器的患者和15例使用口腔功能矫治橡胶牙齿定位器的患者。使用聚醚橡胶印模咬合记录咬合接触。然后将接触点的位置转移到研究模型上。在合并样本（N = 38）中，接触点总数在3个月内增加了14%。这完全是由于后牙（前磨牙和磨牙）接触点数量的增加。治疗结束时接触牙齿较少的病例在3个月内接触牙齿增多。尽管与使用传统保持器的组相比，使用定位器保持的组随着时间推移接触牙齿总数的增加更大，但额外增加的幅度很小。
