1. A misingested hand reamer: report of case;Kitamura;JADA,1974
2. Accidental swallowing of an endodontic instrument. Report of a case;Christen;Oral Surg,1967
3. The case of the missing file. Or six reasons why root canal therapy must never be performed without the rubber dam;Fox;NY State Dent J,1966
4. Hazards of endodontics without the rubber dam; report of three cases;Rosenberg;Ann Dent,1965
5. Accidental swallowing of an endodontic instrument;Goultschin;Oral Surg,1971