[Variations in molar pulp cavity and number of root canals].
D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D006801:Humans; D008963:Molar / Q000033:anatomy & histology; D011859:Radiography; D012390:Root Canal Therapy; D014092:Tooth Root / Q000033:anatomy & histology / Q000000981:diagnostic imaging