MICROBIAL CONTAMINATION IN DENTAL CLINICS

Abstract

Objective: This study aimed to verify microbial contamination in two dental clinics (public and private) in a Brazilian city in the southern region of the state of Rio Grande do Sul through the detection of indicator microorganisms. Material and Methods: Samples were collected from five surfaces (L1-auxiliary table 1, L2-auxiliary table 2, L3-reflector handle, L4-bench, L5-bench/sink) using the swab test technique with a 25cm2 area. The samples were analyzed by enumeration of filamentous fungi and coagulase positive staphylococci (CPE). Logarithmic counts and analysis of variance were used to check for possible differences between the variables surface and dental clinics. Results: high microbial counts on the surfaces were identified in all cases, without differences (p<0.05) between the contaminating microorganisms. Conclusions: considering the collection sites (public and private), the private clinic presented the larger contamination (p<0.05) with fungi as the most predominant organisms. Among the surfaces analyzed, auxiliary tables (L1 e L2) were the sites with the highest microbial contamination (p<0.05). In all cases, it was evidenced the need for a greater frequency and thoroughness in procedures for hygiene and antisepsis as well as for the maintenance of air-conditioner systems. DESCRIPTORS: Staphylococcus. Contamination. Biosecurity.