Objective To study the efficacy of compound sodium hypochlorite disinfectant in disinfection of oral instruments in hospital.

Studing the sterilizing effect of Glutaraldehyde on the dental instruments in common use;

In order to know the present status of disinfection and sterilization of stomatologic instruments in hospitals of different levels and to strengthen further the standardized administration, the quality of disinfection and sterilization of stomatologic instruments in hospitals of different levels in Hefei City was monitored using questionnaire and on-the-spot sampling method.

Objective To evaluate the feasibility and practicability of the substitution of reprocessed oral cavity instruments for single used oral cavity check-up trays,so as to reduce resource waste and environmental pollution caused by utilizing of single used check-up trays.