An existing database was used to compare aspects of dental anesthesiology practice of dental anesthesiologists in Canada (n = 32) and the United States (n = 123). Data focusing on percutaneous injuries were obtained through a mailed questionnaire that was returned anonymously. Respondents provided information on the treatment of patients under deep sedation or general anesthesia only. Eighty-one percent of Canadians and 61% of Americans returned the questionnaire. The vast majority (84%) of injuries reported were due to sharps associated with general dentistry compared with those associated with anesthesiology. Canadians were more likely to be operator-anesthetists (P