Retreatment Of Root Canals In Maxillary Molars Due To Missing Second Mesiobuccal Canals And Its Association With Gender

The knowledge of root canal morphology determines the success of endodontically treated teeth, especially the anatomy of the maxillary molars as its mesiobuccal root has two distinct canals. Majority of failures in maxillary molars result from missing the second mesiobuccal (MB2) canal, as it is present in 50% to 90% of maxillary molars. The aim of the study was to evaluate the association between retreatment of root canals in maxillary molars due to missing second mesiobuccal canal and gender. This study was conducted among patients visiting the outpatient department of a private dental college from June 2019 to March 2020. The data was formulated by reviewing the case sheets of patients and the data was statistically analysed using Statistical Package for Social Sciences (SPSS) software. The current study shows retreatment of root canals in maxillary molars due to missed second mesiobuccal canal was 9.7%. It was more prevalent in the right maxillary first molars (6.5%) compared to left maxillary first molars (3.2%) in which males (6.5%) had higher occurrence rate than females (3.2%). Pearson's Chi Square value: 3.389, p value: 0.06 (>0.05). No significant association was found between gender and retreatment due to missed second mesiobuccal canal.