替牙是治疗前牙反最为重要的时期 ,矫正后由于消除了咬干扰 ,可使下颌功能转入正常行使 ,利于牙齿和颌骨及颞颌关节的健康。下颌联冠斜面导板是一种阻断性治疗替牙前牙反常用的矫治器 ,但对一些反覆大的患者治疗常不能达到理想疗效。为此我们在下前牙使用联冠斜面 Tooth replacement is the most important period for the treatment of anterior 反 reverse,, after correction due to the elimination of bite  interference, the mandibular function can be transferred to the normal exercise, which will benefit the health of the teeth and jaw and temporomandibular joint. Mandibular crown bevel guide plate is a blocking treatment of anterior teeth 反  commonly used appliance, but for some patients with repeated large often can not achieve the desired effect of treatment. To this end, we use the crown under the anterior teeth incline