Abstract
Prevalence and Morphology of MB2 Canals in Maxillary Molars by Cone Beam Computed Tomography (CBCT) and Rate of Treatment in Endodontic Practice with Pre-operative CBCT Images
Highlights
The morphology of maxillary molars has been extensively studied, the prevalence of a second mesiobuccal (MB2) root canal
When it is beneficial to patients and cost or radiation exposure is not a concern, pre-operative cone-beam computed tomography (CBCT) images should be thoroughly analyzed before treatment to ensure treatment quality and to limit iatrogenic complications
We examined the number of all MB2 canals being clinically treated to the frequency of molars that have MB2 canals identified on pre-operative CBCT images
Summary
The morphology of maxillary molars has been extensively studied, the prevalence of a second mesiobuccal (MB2) root canal. Despite of this effort, the high failure rate of root canal treated maxillary molars remains tightly associated with untreated MB2 canals. There is a significant increase in the incidence of MB2 canals in retreatment cases, suggesting that these canals are frequently missed in the initial treatment [1]. Since the first report of MB2 canals in maxillary molars in 1925 [3], the prevalence of MB2 canals has been examined by many techniques, which may explain the variable results between studies. The incidence of MB2 canals in the literature ranges from 18-96% [11]
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