Objective To study the boundary between orthodontic and surgical treatment in correction of anterior open bite.

目的探讨前牙开畸形正畸治疗与外科治疗的界限。

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Treatment procedures included surgical exposure of the high positioned canine, followed by bonding with a lingual button, and orthodontic traction the impacted canine to the proper position.

治疗时先以开窗手术露出此高位的犬齿牙冠后，黏上钮扣然后施予轻微的矫正力量牵引阻生犬齿至正常的位置。

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