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J Int Soc Prev Community Dent. 2017 Sep-Oct;7(5):297-300. doi: 10.4103/jispcd.JISPCD_297_17. Epub 2017 Sep 18.

Endodontic Management of a Maxillary First Molar with Seven Root Canal Systems Evaluated Using Cone-Beam Computed Tomography Scanning.

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Department of Conservative Dentistry and Endodontics, Smiline Dental Hospitals, Hyderabad, Telangana, India.
Department of Conservative Dentistry and Endodontics, Malla Reddy Dental College for Women, Hyderabad, Telangana, India.
Department of Conservative Dentistry and Endodontics, Navodaya Dental College and Hospital, Raichur, Karnataka, India.
Department of Pedodontics and Preventive Dentistry, Darshan Dental College, Udaipur, Rajasthan, India.
Department of Conservative Dentistry and Endodontics, Jaipur Dental College, Jaipur, Rajasthan, India.


Permanent maxillary first molar morphology has been studied widely. Usually, it has three roots with three canals and the frequent deviation being incidence of a second mesiobuccal canal, thus showing a multifaceted root canal anatomy. Other variations comprise four and five roots and abnormal root canal morphology within individual roots. Many case reports with five and six root canals or a C-shaped canal configuration have been reported in the past. This varying number of root canals poses a challenge for 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). We report a change in canal morphology case of maxillary first molar having seven root canals, its evaluation, and management using latest equipment such as CBCT.


Cone-beam computed tomography; molar; root canal therapy

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