在方丝弓矫治技术中，对于深覆牙合患者，打开咬合是至关重要的一步，通常临床中应用各种矫治弓丝上的弯曲或辅助弓丝打开咬合，但有时疗程较长且辅助弓丝易刺激软组织。笔者在临床工作中，利用上颌平面导板辅助方丝弓矫治器，打开前牙咬合，收到较满意的效果，报告如下。... In square arch correction technique, open occlusal occlusion is a crucial step for deep overbite patients. In general, bending on various arch wires or assistant arch wires is often used to open the bite in clinical practice. However, it sometimes takes longer and supplements Bow wire easy to stimulate soft tissue. The author in clinical work, the use of the maxillary plane guide auxiliary wire arch appliance, open the anterior teeth bite, received more satisfactory results, the report is as follows. ...