水平低位埋伏下颌第二磨牙的正畸牵引治疗:附1例报告

Orthodontic extrusion for deep horizontal impaction of the lower second molar: Report of one case

低位埋伏阻生的下颌第二磨牙临床上较少见,但易对患者咀嚼功能、牙弓完整性和邻牙健康产生不良影响。本文报告1例成人低位埋伏阻生的第二磨牙,开窗后经过先直立再伸长的2步牵引法,治疗后达到理想的位置。该病例提示,正畸与外科紧密协作、多学科共同合作,对该类阻生牙的治疗具有重要意义。

The prevalence of impaction of the mandibular second molar （M2） is low. However, the common complications are harmful to the masticatory function, the dentition integrity as well as the adjacent tooth. We presented a case of the deeply impacted M2 that underwent first surgical explosion and then orthodontic extrusion and eventually erupted into excellent position. This case illustrated the importance of combined orthodontic-surgical approach to establish the optimal treatment plan. Supported by Young Teacher Training Program of Shanghai Universities.