Kaushik Aishvarya, Talwar Sangeeta, Yadav Seema, Chaudhary Sarika, Nawal Ruchika Roongta
Department of Conservative Dentistry & Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India.
Dent Res J (Isfahan). 2014 Nov;11(6):700-4.
The presence of three root canals in the distal root of the mandibular first permanent molars is rare; based on in vitro studies its incidence is reported to be between 0.2% and 3%. With the advent of cone beam computed tomography (CBCT) as an adjunctive diagnostic aid, the determination of root canal anatomy in teeth with extra canals and complex canal configurations has become more precise. CBCT provides three dimensional visualization of the pulp canal space, allowing the clinician in determining the spatial relationships of the root canals with each other at various cross sectional levels along the length of the root. The present report discusses the endodontic management of a mandibular first permanent molar with three canals in the distal root, employing CBCT as an adjunctive diagnostic aid to conventional radiography.
下颌第一恒磨牙远中根存在三根根管的情况较为罕见；根据体外研究，其发生率据报道在0.2%至3%之间。随着锥形束计算机断层扫描（CBCT）作为一种辅助诊断工具的出现，对于具有额外根管和复杂根管形态的牙齿，根管解剖结构的确定变得更加精确。CBCT提供了牙髓根管空间的三维可视化，使临床医生能够确定沿牙根长度不同横截面水平上根管之间的空间关系。本报告讨论了一例下颌第一恒磨牙远中根有三根根管的牙髓治疗管理，将CBCT作为传统放射照相的辅助诊断工具。
