Factors Affecting Sterilization of HBV on Dental Hand Piece
- VernacularTitle:热力消毒灭活牙科手机污染HBV影响因素研究
- Author:
Lei SHI
;
Guangliang NIU
;
Jinghua TIAN
;
Hui ZHAO
;
Ya LIU
;
Yao XIE
- Publication Type:Journal Article
- Keywords:
HBV;
Sterilization;
Hand piece
- From:
Chinese Journal of Nosocomiology
2006;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To investigate the factors influencing the effects of disinfection of HBV on dental hand piece. METHODS After polluted with HBV positive serum,the dental hand piece was disinfected with sterilizer at the condition of 134℃ for 5 minutes according different treatment procedures.The samples were then taken and detected HBsAg by the automatic enzyme immune analyzer using the third generation EIA agent.The efficacy of disinfection of HBV was presented by the reaction of HBsAg detection. RESULTS If the dental hand piece was sterilized directly not cleansed using clean water after pollution and dried in room temperature,there were 96.87% of the samples being HBsAg positive,and the polluted but dried hand piece,even cleansed there were 87.5% of positive result, even if prolonged the time of sterilization and the frequencies of vacuumization,the HBsAg positive rate of the sample was still up to 56.25%.But if the hand piece was irrigated and cleansed immediately after pollution and sterilized,all samples were HBsAg negative. CONCLUSIONS Whether or not cleansed immediately is the most important factor influencing the efficacy of hand piece sterilization after pollution.
