Accidental swallowing of endodontic instruments.

Swallowing or aspiration of a foreign body is a complication that may arise from any procedure in the oral cavity performed without the use of a rubber dam. Two cases of swallowed endodontic instruments and possible complications are presented. Emphasis is given in the discussion on the early diagnosis and treatment and primarily on prevention with the use of rubber dam, an absolute essential during endodontic treatment.