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twin-block矫治器是治疗下颌发育不足引起的安氏Ⅱ类错畸形的一种简单有效的功能矫治器,其治疗可引起髁突和关节盘的适应性改建,使下颌骨得以生长改建从而改善上下颌骨不调的关系,但矫治后是否对患者颞下颌关节(TMJ)产生实质性的改建以及对成人矫治的效果,目前尚存在较大的争论。本文就twin-block矫治器的矫治原理以及治疗后患者TMJ髁突和关节窝的适应性改建作一综述,以利于口腔正畸医生正确理解功能性矫治器引起TMJ改建的机制,为临床上治疗下颌后缩型安氏Ⅱ类错畸形提供理论依据,并指导其适应证和矫治时机的选择。
The twin-block appliance is a simple and effective functional appliance for the treatment of Class Ⅱ malocclusion caused by underdevelopment of the mandible, and its treatment can cause conformal and articular disc adaptations that allow the mandible to grow and remodel Improve the relationship between mandibular bone tone, but whether the treatment of patients with TMJ substantial alteration and the effect on adult orthodontic treatment, there is still much debate. This review summarizes the principles of the twin-block appliance and its adaptation to the TMJ condyles and jugular fossa after treatment in order to facilitate orthodontists to correctly understand the mechanism of functional appliance TMJ remodeling for clinical treatment Mandibular retrusion Angle Class Ⅱ malocclusion provides theoretical basis, and to guide the indications and the timing of treatment options.