The permanent maxillary first molar usually has three roots with three canals and the frequent deviation being the incidence of a second mesiobuccal canal. Other variations comprise four, five and six root canals with three to four roots. This varying number of root canals poses a challenge for an endodontist in detecting and treating by root canal treatment. This problem can be avoided using techniques such as using the dental operating microscope and cone-beam computed tomography (CBCT).
Missed root canals are the common cause for root canal treatment failure. Conventionally, to assess root canal configuration before, during, and after endodontic treatment, IOPA radiographs play a vital role. However, these radiographs have certain limitations, thus newer diagnostic tools such as CBCT scanning are being used recently, mainly in cases with suspected unusual root canal morphology
A thorough knowledge of root canal anatomy, proper access cavity preparation with good illumination and newer diagnostic tools like loops, microscopes, and CBCT will help to find, evaluate and treat successfully these extra canalsDr Vijay Reddy Venumuddala, MDS
J Int Soc Prev Community Dent 2017 Sep-Oct;7(5):297-300. Epub 2017 Sep 18.
Department of Conservative Dentistry and Endodontics, Jaipur Dental College, Jaipur, Rajasthan, India.
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