Objective To investigate the situation about the dental impression disinfection knowledge of the medical staff in stomatological hospitals. Methods A questionnaire investigation was conducted on 582 medical staff in five Grade A Class Three stomatological hospitals. The investigation items included demographic characteristics and knowledge on dental impression disinfection. Results Of 582 subjects, 424 subjects（72.85%） thought that the dental impressions should be disinfected. 76 persons chose 75% alcohol to disinfect the dental impressions, 26 persons chose povidone iodine or glutaral, 103 persons chose sterilization machine, 180 persons chose to wash with water, and 197 persons were unknown about the sterilization methods. The status of the staff grasping knowledge on dental impression disinfection was related with the working department. Conclusion Our results suggest that it is necessary to strengthen the importance of impression disinfection to medical staff in stomatological hospitals. The consciousness of protection should be enhanced to reduce the cross infection in hospitals.
