Veeramachaneni Chandrasekhar, Thumu Jayaprakash, Aravelli Swathi.
Maxillary first molar with unusual morphology diagnosed with spiral computed tomography scanning: a case report.
Isra Med J Jan ;3(3):106-9.

Variations in the root canal morphology of the maxillary first molar are quiet common. During endodontic therapy if the practitioner is unable to detect these variations the root canals might be left untreated which may be a reason for the failure of the endodontic treatment. The most common form of the permanent maxillary first molar has three roots with three canals, one mesiobuccal, one distobuccal and palatal canals. The commonest variation is the presence of a second mesiobuccal canal. 98.3% of maxillary first molar have been reported to have a single distobuccal canal. Two canals were found only 1.7% of the time, hence showing the second disto buccal canal to being a rare occurrence. This case report presents the endodontic management of a maxillary first molar with five root canals (two mesiobuccal-MB1, MB2, two distobuccal- DB1, DB2 and one palatal-P) confirmed with the aid of spiral computed tomography (SCT).

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