下尖牙双根变异,临床上甚为少见,现报导—例如下。患者,女65岁,因镶全口义齿而拔除口内残牙时,发现33双根,显唇舌二根,舌根细小,略弯曲,长度10.5mm,直径3.5mm。唇根较粗直,长度12.5mm,直径4.5mm。 临床医师在进行前牙根管治疗时,应注意及此,拍摄X线片,必要时可更换角度,以防止遗漏根管,造成治疗上的失败。 Variation of the canines double root, clinically rare, reported now - for example below. Patients, female, 65 years old, due to the insertion of full denture and removal of intraoral residual teeth, found 33 pairs of roots, showing two lips, tongue small, slightly curved, length 10.5mm, diameter 3.5mm. Lip root thicker, length 12.5mm, diameter 4.5mm. Clinicians in the treatment of anterior root canal should pay attention to this and take X-ray film, if necessary, can be replaced to prevent the root canal missing, resulting in the failure of treatment.