Abstract
The purpose of this study is to survey an experience of accidents/complications during and after dental treatment at general dental clinics. Questionnaire was administered to 247 dental practitioner who worked in general dental clinics in the middle part of Nagano Prefecture. Hundred and five (42.5%) sent back the answer. The rate for the experience of accident during treatments was 59% and that after treatment was 45%. Cerebral anemia, including neurogenic shock, was most frequently reported, followed by allergic reactions to drug and postoperative bleeding. The experience rate for each accidents/complications was as follows: 55% for accidental swallowing, 49% for allergic reaction to drugs, 45% for neurogenic shock, and 30% for worsening of general diseases.