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Restor Dent Endod. 2012 Aug;37(3):175-9. doi: 10.5395/rde.2012.37.3.175. Epub 2012 Aug 29.

Endodontic management of a C-shaped maxillary first molar with three independent buccal root canals by using cone-beam computed tomography.

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Department of Conservative Dentistry, Wonkwang University School of Dentistry, Iksan, Korea.


The aim of this study was to present a method for endodontic management of a maxillary first molar with unusual C-shaped morphology of the buccal root verified by cone-beam computed tomography (CBCT) images. This rare anatomical variation was confirmed using CBCT, and nonsurgical endodontic treatment was performed by meticulous evaluation of the pulpal floor. Posttreatment image revealed 3 independent canals in the buccal root obturated efficiently to the accepted lengths in all 3 canals. Our study describes a unique C-shaped variation of the root canal system in a maxillary first molar, involving the 3 buccal canals. In addition, our study highlights the usefulness of CBCT imaging for accurate diagnosis and management of this unusual canal morphology.


Anatomical variation; C-shaped; CBCT; Maxillary first molar

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