title: 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.
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.
authors.affiliation: Programa de Microbiologia, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, Universidade Estadual Paulista , Jaboticabal, SP , Brasil.
authors.forename: Ana Claudia
authors.initials: AC
authors.lastname: de Oliveira
authors.forename: Renato Pariz
authors.initials: RP
authors.lastname: Maluta
authors.forename: Ariel Eurides
authors.initials: AE
authors.lastname: Stella
authors.forename: Everlon Cid
authors.initials: EC
authors.lastname: Rigobelo
authors.forename: José Moacir
authors.initials: JM
authors.lastname: Marin
authors.forename: Fernando Antonio
authors.initials: FA
authors.lastname: de Ávila
keywords: Pseudomonas aeruginosa; antimicrobial resistance; biofilms; dental units; opportunistic pathogens; water lines
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