阻生牙截冠术用于含牙囊肿治疗

 随着微创理念的发展，功能保存和术后并发症的预防成为口腔颌面外科医生关注的课题。当下颌阻生牙伴有含牙囊肿时，囊肿刮除术及牙拔除术可能造成下牙槽神经暂时性或永久性损伤，导致下唇感觉异常，严重影响患者的生活质量。20世纪80年代，截冠术引入口腔颌面外科领域，目前对其安全性、可操作性、并发症发生率等方面都有较充分的研究。文章介绍阻生牙截冠术用于含牙囊肿治疗的适应证与禁忌证、操作要点以及相关手术并发症。

Minimal-invasive treatment for dental caries

With the development of minimally invasive concept，the function preservation and the prevention of complications has drawn increasing attention from oral surgeons. When the impacted mandibular tooth is accompanied by dentigerous cyst，enucleation of the cyst or tooth extraction may cause temporary or permanent damage to the inferior alveolar nerve，leading to paresthesia of the lower lip，which seriously affects the quality of patients′ lives. In 1980s，coronectomy was introduced into the field of oral surgery. There have been a lot of researches on its safety，practicality，and complication rate. This article makes an introduction to coronectomy for impacted tooth，including indications and contraindications，surgical procedures and complications.