为了减轻口腔科患者在治疗中的不愉快感和恐惧心理,正在愈来愈多地采用笑气吸入镇静法,不仅口腔外科的全身麻醉使用,而且身心损害者使用笑气吸入镇静法也多起来。然而,笑气及氟烷对治疗室的环境污染问题,还没有很好的解决办法。环境污染不论是对患者,还是对医务工作者都有影响,从健康的角度出发,管理就是个重大问题。目前不仅日本,就连欧美对于剩余麻醉气体处理和规定的基本标准也没有 In order to reduce dentistry patients in the treatment of unpleasant feelings and fear, is more and more use of nitrous oxide inhalation sedation, not only oral surgery, general anesthesia, and physical and psychological damage using nitrous oxide inhalation sedation law also more. However, there is no good solution to the problem of environmental pollution caused by nitrous oxide and halothane in treatment rooms. Environmental pollution has an impact both on patients and on medical workers. From a health perspective, management is a major issue. At present, not only Japan, but also the basic standards of Europe and the United States for the treatment and regulation of the remaining anesthetic gases