Rajalbandi Sandeep, Shingte Sandhya Narayan, Sundaresh K J, Mallikarjuna Rachappa
Department of Conservative and Endodontics, Academy of Medical Education's Dental College and Hospital, Raichur, Karnataka, India.
BMJ Case Rep. 2013 Apr 30;2013:bcr2013008641. doi: 10.1136/bcr-2013-008641.
Thorough knowledge of root canal morphology is essential for the endodontic therapy. Variations in the root and root canal morphology, especially in multirooted teeth, are a constant challenge for diagnosis and management. The dentist needs to be familiar with the various root canal configurations and their variations for successful endodontic therapy. There are rare variations in canal number and configuration in maxillary molars, which could affect treatment outcome. Two lingual root structures are occasionally found on human permanent maxillary molars. One of these is the normal lingual root, which is always present, the other is a supernumerary structure which can be located either mesiolingually (radix mesiolingualis) or distolingually (radix distolingualis). The purpose of this paper is to review the literature and to demonstrate a case report which describes the successful non-surgical endodontic management of an unusual maxillary first molar with four separate roots and four canals.
全面了解根管形态对于牙髓治疗至关重要。牙根和根管形态的变异，尤其是多根牙的变异，对诊断和治疗始终是一项挑战。为了成功进行牙髓治疗，牙医需要熟悉各种根管形态及其变异情况。上颌磨牙的根管数量和形态存在罕见变异，这可能会影响治疗效果。人类恒牙上颌磨牙偶尔会出现两种舌侧根结构。其中一种是始终存在的正常舌侧根，另一种是额外结构，可位于近中舌侧（近中舌侧根）或远中舌侧（远中舌侧根）。本文的目的是回顾文献并展示一例病例报告，该病例描述了对一颗具有四个独立牙根和四个根管的异常上颌第一磨牙成功进行非手术牙髓治疗的情况。
