Nallapati Sashi
Department of Endodontics, Nova Southeastern University, Fort Lauderdale, FL 33328, USA.
J Endod. 2005 Jun;31(6):474-6. doi: 10.1097/01.don.0000157986.69173.a6.
Mandibular premolars have earned the reputation for having aberrant anatomy. The occurrence of three canals with three separate (type V, Vertucci) foramina in mandibular premolars is very rare. If one is to treat mandibular premolar teeth with three canals predictably, it is necessary to be aware of their clinical and radiographic anatomy. These teeth may also require special shaping and obturating techniques. This article reports and discusses the treatment recommendations for an unusual occurrence of three canals with three separate foramina in both the first and second mandibular premolars in the same patient.
下颌前磨牙因解剖结构异常而闻名。下颌前磨牙出现三条根管及三个独立（V型，韦尔图奇分型）根尖孔的情况非常罕见。如果要对具有三条根管的下颌前磨牙进行可预测的治疗，就必须了解其临床和影像学解剖结构。这些牙齿可能还需要特殊的根管预备和充填技术。本文报告并讨论了同一患者下颌第一和第二前磨牙出现三条根管及三个独立根尖孔这一罕见情况的治疗建议。
