1口腔交叉感染的易感性口腔是一种复杂的微生态环境,是多种病原微生物栖居之所。目前,随着病原微生物抗药性的迅速形成,侵袭性操作的不断增加,口腔治疗中的交叉感染的概率日益增加。据报道,美国口腔医师乙肝感染率是一般人群感染率的3~6倍,口腔颌面外科医师则高达38.5%,我国口? 1 oral susceptibility to oral infection is a complex micro-ecological environment, is the dwelling place of many kinds of pathogenic microorganisms. At present, with the rapid formation of drug resistance of pathogenic microorganisms, and the increasing number of invasive procedures, the probability of cross-infection in oral treatment is on the rise. It is reported that the rate of hepatitis B infection among the stomatologists in the United States is 3 to 6 times that of the general population and that of oral and maxillofacial surgeons is as high as 38.5%.