Results: All impacted anterior maxillary teeth of the 16 cases were successfully moved into alignment with pulpal vitality ,and no postoperative complications were found.

• 结果:16例上颌埋伏阻生前牙均顺利萌出至正常位置,牙髓活力测试正常。未见龈退缩、邻牙牙根吸收和支抗丧失等常见并发症。