Intrusion of maxillary molar roots into the maxillary sinus in a sample of the Egyptian population using cone beam computed tomography

Abstract Background The proximity of the maxillary sinus floor to molar roots increases probability oroantral communication on conducting any surgical or endodontic procedure in involved area. aim this study is evaluate relationship between each root and using cone beam computed tomography. Predicting protrusion into will consequently predict occurrence fistula a sample Egyptian population. Results total number located outside was 121 (35.3%), while those contacting were 80 (23.3%) intruded 141 (41.2%). percentage intrusion males (56.9%) significantly ( p = 0.01) higher than females (42.9%). left molars (54.2%) non-significantly 0.067) that right side (44.3%). As for type tooth, second showed highest (55.3%) followed by third (52.6%) then first (40.9). According root, mesiobuccal (50.9%) palatal (49.1%) distobuccal (47.4%). However, difference both tooth statistically non-significant 0.051 0.869 respectively). individual with intrusion, mesio-buccal most frequent intrude (71.4%) least (22.7%). Conclusions In population, exhibit females. are impact its compared root. Left at risk communications procedures other due sinus.