Abstract

Aim: To evaluate the root canal morphology (RCM) of mandibular premolars and to identify the difference between the males and females in Aljouf population.

Methods: The CBCT scans belonging to 376 patients (166 women and 210 men) aged between 15 and 60 years, were evaluated. The CBCT scans were evaluated from the cementoenamel junction to the apical portion of the root. The number of roots and canals of the selected teeth were documented. The obtained data was entered in excel sheet and was analyzed by SPSS 21 software using Chi-square test.

Results: In lower first premolar, out of total 752 teeth examined, overall, the presence of mandibular first premolars with single root was more than two roots and this difference between the men and women was statistically significant (P = 0.056). Similarly, the occurrence of mandibular first premolars with single canal was considerably more than two canals, and the difference between males and females did not display any significant difference (P = 0.129). In mandibular second premolars, the presence of single root was more than two roots and the presence of the roots among genders did not display any significant difference (P = 0.312). Similarly, the presence of mandibular second premolars with single canal was more than two canals, and presence of canals among the genders did not display any significant difference (P = 0.385).

Conclusion: The incidence of mandibular first premolars and mandibular second premolars with two roots and canals was more common in the males than females.

Keywords: mandibular first premolars, mandibular second premolars, root canal morphology