title: Effects of instrumentation with a chelating agent on the periapical seal of obturated root canals.
mesh_terms: D003646:Debridement; D004492:Edetic Acid / Q000627:therapeutic use*; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D066298:In Vitro Techniques; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012389:Root Canal Obturation; D012390:Root Canal Therapy; D012834:Silver / Q000627:therapeutic use; D014092:Tooth Root / Q000473:pathology
chemical_list: D012387:Root Canal Filling Materials; D012834:Silver; D006171:Gutta-Percha; D004492:Edetic Acid