Subbiya Arunajatesan, Mitthra Suresh, Banu Sherin, Malarvizhi Dhakshinamoorthy
Professor and Head, Department of Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India.
Reader, Department of Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, Tamil Nadu, India.
J Clin Diagn Res. 2017 Jun;11(6):ZD10-ZD13. doi: 10.7860/JCDR/2017/27480.10012. Epub 2017 Jun 1.
Variation in the root and canal morphology of maxillary second molars is quite common. The most common configuration is three roots and three or four canals. But the presence of an additional palatal root is rather uncommon and has been reported to have an incidence of 1.4%. The extra root is located mesiolingual or distolingual to the primary palatal root. This is a unique case report that describes the successful endodontic management of a maxillary second molar with Radix Distolingualis (RDL). Identification of this variation was done through clinical examination, multi-angled radiographs, surgical operating microscope and an accurate assessment of this morphology was made with the help of Cone Beam Computed Tomography (CBCT) imaging. In addition, this article also discusses the literature review, guidelines for diagnosis and treatment of RDL.
上颌第二磨牙的牙根和根管形态变异颇为常见。最常见的形态是三根及三个或四个根管。但额外腭根的存在相当罕见，据报道发生率为1.4%。额外的牙根位于主腭根的近中舌侧或远中舌侧。这是一篇独特的病例报告，描述了对一颗具有远中舌侧根（RDL）的上颌第二磨牙进行成功根管治疗的过程。通过临床检查、多角度X线片、手术显微镜对这种变异进行识别，并借助锥形束计算机断层扫描（CBCT）成像对该形态进行准确评估。此外，本文还讨论了文献综述、RDL的诊断和治疗指南。
