Investigation on contamination of high-frequency contact surfaces near dental chairs in outpatient department of Stomatology / 中国实用护理杂志

ABSTRACT

Objective:To observe and compare the dynamic changes of contamination of high-frequency contact surfaces near dental chairs in outpatient department of stomatology, so as to provide reference for the disinfection management of the surface contamination near dental chairs in outpatient department of stomatology.Methods:The chair-side operating tables and treatment vehicle tables in the Department of periodontology, general stomatology and orthodontics of Stomatology center of our hospital were selected as the subjects of investigation. Biofluorescence detector was used to smear and sample the designated areas immediately after disinfection and 1 hour, 2 hours and 3 hours after disinfection respectively. Each site was collected and observed for 5 working days.Results:The qualified rate of sample was 100% immediately after disinfection, and the contamination exceeded the standard one hour, two hours and three hours the qualified rate of sampling was 26.7% (8/30) , 23.3% (7/30) and 13.3% (4/30) after disinfection. There was a significant difference in the qualified rate of sample at each time point ( χ2 value was 59.155, P<0.05). One hour, two hours and three hours after disinfection, the contamination of chair-side tables the qualified rate of sampling was 26.7% (4/15) , 20.0% (3/15) and 13.3% (2/15) and treatment vehicles the qualified rate of sampling was 26.7% (4/15) , 26.7% (4/15) and 13.3% (2/15) exceeded the standard and there was no significant difference in the qualified rate of sample at each point ( χ2 value was 0.034, P>0.05). Conclusion:The outpatient department of stomatology should pay attention to the disinfection management of high-frequency contact surfaces near dental chairs, and adjust the disinfection frequency reasonably according to the change of pollution to ensure the surface hygiene and meets the standard requirements.