Abstract
Objective To find a safe way to disinfect moulage tray and reformative model for the department of stomatology and refine the traditional disinfection method. Methods Using the self-developed ultraviolet disinfectant equipment with intense light board, by virus and HBsAg contamina-tion test, we compared the numbers of virus in the observation group and the control group, which con-sisted of 122 moulage trays and reformative models, before and after disinfection, and observed the ef-fect of disinfection. Results After 5-minute disinfection, 99.99% living bacteria were killed, which meets the standard requirement of P.R.C health department that indicator bacteria killing ratio must be greater or equal than 99.9%. After 18-minute disinfection, HBsAg antigen destructiveness meets S/N< 2.1 standard of P.R.C health department. After 20 min, the antigen was destroyed completely. Bacteria contents before and after disinfection in 122 moulage trays and reformative models were different in statistics.. Conclusions The disinfection method using ultraviolet disinfectant equipment with intense light board is harmless, taintless and efficient, and provides a safe, reliable and maneuverable way for the moulage tray and reformative model disinfection in the department of stomntology. Key words: Ultraviolet disinfectant equipment with intense light board; Moulage tray; Reforma-tive model; Materials disinfection
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