Nitrous oxide: a survey of Indiana dental offices

This investigation surveyed Indiana dental practices to determine the current use of nitrous oxide; administration procedures, ventilation techniques, and potential health hazards associated with exposure to nitrous oxide waste gases. A 26-item questionnaire was sent to 2,256 dental offices in Indiana. Questions were asked regarding office demographics, use of nitrous oxide administration and inspection procedures, symptoms of N2O exposure, and interest in further administration and safety information. The data were evaluated using a computer program for frequency counts and percentages. The results of this survey provide a profile of nitrous oxide utilization in Indiana.