title: [Comparative x-ray studies of root fillings with N2 and gutta-percha].
mesh_terms: D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging*; D004341:Drug Evaluation; D004361:Drug Tolerance; D005500:Follow-Up Studies; D006171:Gutta-Percha / Q000627:therapeutic use*; D006801:Humans; D011859:Radiography; D012387:Root Canal Filling Materials / Q000627:therapeutic use*
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha
vernacular_title: Vergleichende röntgenologische Untersuchungen von Wurzelfüllungen mit N2 und Guttapercha.