1. Evaluation of endodontic results;Stewart;Dent Clin North Am,1967
2. Endodontic failures;Grossman;Dent Clin North Am,1972
3. Hazards of endodontics without the rubber case report of three cases;Rosenberg;Ann Deal,1965
4. Accidental swallowing of an endodontic instrument: report of a case;Christen;Oral Surg,1967
5. Endodontic procedures must never be performed without the rubber dam;Hellng;Oral Surg,1977