TY - JOUR A1 - Gupta, Alpa A1 - Duhan, Jigyasa A1 - Wadhwa, Jitesh T1 - Prevalence of three rooted permanent mandibular first molars in Haryana (North Indian) population Y1 - 2015/1/1 JF - Journal of Indian Association of Public Health Dentistry JO - J Indian Assoc Public Health Dent SP - 38 EP - 41 VL - 13 IS - 1 UR - https://journals.lww.com/aphd/pages/default.aspx/article.asp?issn=2319-5932;year=2015;volume=13;issue=1;spage=38;epage=41;aulast=Gupta DO - 10.4103/ccd.ccd_699_16 N2 - Background: Mandibular first molars typically have two roots but sometimes a supernumerary root presents distolingually called as radix entomolaris (RE). Aim: The present study evaluated the prevalence of permanent mandibular first molars featuring a distolingual root in Haryana (North India). Materials and Methods: Five hundred patients possessing bilateral mandibular first molars were selected for this study. The intraoral periapical radiographs were taken. The radiographs of these patients were evaluated under optimal conditions. A total of 1000 mandibular first molars were screened, and the incidence of three-rooted mandibular first molars, RE and the correlation between left and right side occurrence and between either gender were recorded. Statistical Analysis: The binary logistic regression test and Pearson's Chi-square test were used for statistical analysis. Results: The prevalence of three-rooted permanent mandibular first molars was 13% of the patients examined and 8.3% of the teeth examined. There was no statistically significant difference between gender and side of occurrence (P ≥ 0.05). The bilateral incidence of a symmetric distribution was 27.6 (18/65) among the RE teeth examined. Conclusion: RE is considered as an Asiatic trait. The occurrence of this macrostructure in the Haryana (North India) population was found to be 13%. The clinician must thoroughly examine the radiographs before the initiation of endodontic therapy. ER -