Angle Orthod. 2020 Mar;90(2):305-313. doi: 10.2319/080218-559.1. Epub 2019 Mar 12.
This case shows that using a rapid palatal expander (RPE) and then a pendulum appliance anchored to palatal miniscrews is an option for improving treatment management in a noncompliant patient requiring maxillary expansion and molar distalization in the late mixed dentition. First, an RPE was used to expand the maxillary arch. Then, a modified pendulum appliance was used to distalize the maxillary first permanent molars. Optimal positioning of two palatal miniscrews enabled both appliances to be supported by skeletal anchorage. Treatment was finished using multibracket fixed appliances, and after 2 years, skeletal Class I as well as dental Class I canine and molar relationships were achieved.
本病例表明，对于依从性差的患者，在替牙晚期需要上颌扩弓和磨牙远移时，使用快速腭扩张器（RPE）和随后的悬挂式矫治器固定于腭部微螺钉上，是一种改善治疗管理的选择。首先，使用 RPE 来扩宽上颌弓。然后，使用改良的 Pendulum 矫治器来远移上颌第一恒磨牙。通过在腭部放置两颗微螺钉，实现了最佳的定位，从而使两个矫治器都能获得骨骼支抗。最后使用多曲方丝弓固定矫治器完成治疗，2 年后，患者达到了骨性Ⅰ类和牙性Ⅰ类尖牙和磨牙关系。
