Objective To learn about disinfection effectiveness of interventions of the individual dental clinics in specific part of Chengdu and to ensure the quality of disinfection work. Methods The intervention methods including on- site training,focus- group study,in- field skills training and a questionnaire survey were used and then followed by investigation on the effect of an intervention. Results The majority of disinfection facilities of private dental clinics in the specific part of Chengdu lack disinfectio...