下颌尖牙一般为单根单根管,很少出现双根管。笔者在临床上碰到2例下颌尖牙双根管病例,报告如下。病例资料病例1左下颌尖牙因根尖周炎行根管再治疗,去除33原根管内充填物,探及颊舌侧两个根管口,颊舌侧根管长度相当,常规预备根管,偏角投照拍摄试尖片:显示2个根管口,2个根尖孔,2根周膜影像。常规完成根管治疗(图1)。图1病例1左下颌尖牙双根管X线片术前片测长片图2病例2右下颌尖牙双根管X线片 Mandibular fangs are generally single single tube, rarely appear double root canal. I encountered in 2 cases of mandibular canine double root canal cases, the report is as follows. Case data Case 1 left mandibular canine due to periapical periodontitis root canal re-treatment, removal of 33 primary root canal filling, exploration and buccal-lingual two root canal mouth, canal length of the buccal-lingual side of the root, conventional preparation of the root canal, Angular projection shot test tip: shows 2 root canal mouth, 2 apical foramen, 2 weeks film images. Routine root canal therapy (Figure 1). Figure 1 Case 1 left mandibular canine two-root canal radiograph preoperative film length film Figure 2 Case 2 right mandible canine two-root canal radiograph