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. 2008 Jul;39(3):579-84.
doi: 10.1590/S1517-838220080003000032. Epub 2008 Sep 1.

Isolation of Pseudomonas aeruginosa strains from dental office environments and units in Barretos, state of São Paulo, Brazil, and analysis of their susceptibility to antimicrobial drugs

Ana Claudia de Oliveira  1 , Renato Pariz Maluta, Ariel Eurides Stella, Everlon Cid Rigobelo, José Moacir Marin, Fernando Antonio de Ávila
Affiliations

Isolation of Pseudomonas aeruginosa strains from dental office environments and units in Barretos, state of São Paulo, Brazil, and analysis of their susceptibility to antimicrobial drugs

Ana Claudia de Oliveira et al. Braz J Microbiol. 2008 Jul.

Abstract

A wide variety of opportunistic pathogens has been detected in the tubing supplying water to odontological equipment, in special in the biofilm lining of these tubes. Among these pathogens, Pseudomonas aeruginosa, one of the leading causes of nosocomial infections, is frequently found in water lines supplying dental units. In the present work, 160 samples of water, and 200 fomite samples from forty dental units were collected in the city of Barretos, State of São Paulo, Brazil and evaluated between January and July, 2005. Seventy-six P. aeruginosa strains, isolated from the dental environment (5 strains) and water system (71 strains), were tested for susceptibility to six antimicrobial drugs most frequently used against P. aeruginosa infections. Susceptibility to ciprofloxacin, followed by meropenem was the predominant profile. The need for effective means of reducing the microbial burden within dental unit water lines is emphasized, and the risk of exposure and cross-infection in dental practice, in special when caused by opportunistic pathogens like P. aeruginosa, are highlighted.

Keywords: Pseudomonas aeruginosa; antimicrobial resistance; biofilms; dental units; opportunistic pathogens; water lines.

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Figures

Figure 1
Figure 1
Antimicrobial susceptibility patterns in Pseudomonas aeruginosa isolated from dental units in Barretos, SP, between January and July 2005.
See this image and copyright information in PMC

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