肌激动器是功能矫治器的一类,主要用于矫治生长发育高峰前期或高峰期的安氏Ⅱ类错畸形,并能获得良好的临床效果,从而受到国内外学者的关注。本文对此类矫治器的矫治时机、临床应用的注意问题、改良设计、对骨和牙槽骨的效应、对颞下颌关节和咀嚼肌运动的影响及其稳定性作一综述。 Muscle activator is a kind of functional appliance. It is mainly used to correct Class Ⅱ malocclusion of Malignant Class Ⅱ in pre-peak or peak-peak of growth and development, and can obtain good clinical effect, which has attracted the attention of domestic and foreign scholars. This article summarizes the timing of orthodontic treatment, the attention of clinical application, the improved design, the effect on the bone and alveolar bone, the effect on the temporomandibular joint and the masticatory muscle movement and their stability.