成功的牙髓治疗有赖于对根管解剖形态的正确认识。遗漏根管往往成为治疗失败的原因。下颌侧切牙和第一双尖牙根管的解剖形态比较复杂。国外学者已用多种方法对此做了大量研究,一般认为下颌侧切牙双根管占40％以上,下颌第一双尖牙双根管占20％以上。国内有关资料较少,尚未引起临床医 Successful endodontic treatment depends on a correct understanding of the anatomy of the root canal. Missing the root canal often becomes the cause of treatment failure. The anatomy of mandibular lateral incisors and first bicuspid canals is complex. Foreign scholars have done a lot of research on this method in a variety of ways. It is generally believed that the double root canal of mandibular lateral incisors accounts for more than 40%, and the first double canines of mandibles account for more than 20%. Domestic less relevant information, has not aroused clinicians