title: [Periodontitis following root canal obturation].
mesh_terms: D006171:Gutta-Percha / Q000009:adverse effects; D006801:Humans; D010518:Periodontitis / Q000175:diagnosis / Q000209:etiology*; D012389:Root Canal Obturation / Q000009:adverse effects*
chemical_list: D006171:Gutta-Percha