青少年上颌恒埋伏牙常导致多种错畸形,对口腔美观及功能有较大不良影响,开窗牵引导萌是一种有效的治疗方法,常规牵引方法是利用较粗主弓丝牵引或者是主弓丝加辅弓的双弓丝牵引,牵引埋伏牙的同时使临牙压低或者唇倾,不可避免的导致一定程度的开,为矫治开再作颌间牵引 Adolescent maxillary permanent impacted teeth often lead to a variety of misdiagnosis, on the esthetic appearance and function of the larger adverse effects, window traction guide adorable is an effective treatment, the conventional traction method is the use of thick main arch wire traction or The main arch wire plus auxiliary arch double arch wire traction, ambush traction teeth at the same time so that the clinical pressure or lip declination, inevitably lead to a degree of opening up for reopening for intermaxillary traction