一、关于冷冻头的消毒:冷冻头的消毒概念至今在同道中的认识颇不一致。目前 HBSAg 在普查中有些地方的阳性率高达20%,而乙肝病毒的传染途径血液占首位,唾液占第二位,因此,口腔疾病行接融冷冻时,医源性交叉传染的可能性就不能不引起我们重视。鉴于冷冻不能杀灭细菌,更不能杀灭病毒,而高压消毒法、火 First, on the disinfection of frozen head: the concept of disinfection frozen head so far in the understanding of quite different. At present, the positive rate of HBSAg in some places in the census is as high as 20%, while the bloodstream of hepatitis B virus takes the first place and the saliva takes the second place. Therefore, when oral diseases are frozen and thawed, the possibility of iatrogenic cross infection can not Do not cause us to pay attention. In view of freezing can not kill bacteria, but can not kill the virus, while the autoclave, fire