下颌第三磨牙阻生致第二磨牙远中颈部龋,临床上屡见不鲜,但引起第二磨牙远中根大部分吸收而患牙仍保持活力者,临床上较为罕见。笔者最近遇到一例,报告如下。患者女性,46岁,西月前因左下后牙冷热激发痛一 Mandibular third molars obstruction caused by the second molars far neck caries, clinically common, but caused by the second molars most of the absorption of the distal root and teeth still retain vitality, is relatively rare clinical. I recently encountered a case, the report is as follows. Patients, female, 46 years old, due to hot and cold pain caused by the left lower posterior teeth of the left lower extremity