title: [Clinico-roentogenological observations on endodontic therapy, with special reference to appearance of periapical radiolucent area in treated maxillary first permanent molars (preliminary reports) (author's transl)].
mesh_terms: D006801:Humans; D008437:Maxilla; D008963:Molar; D010483:Periapical Diseases / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D011859:Radiography; D012390:Root Canal Therapy