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Dental Unit Waterlines in Quito and Caracas Contaminated with Nontuberculous Mycobacteria: A Potential Health Risk in Dental Practice.
Castellano Realpe, Orlando J; Gutiérrez, Johanna C; Sierra, Deisy A; Pazmiño Martínez, Lourdes A; Prado Palacios, Yrneh Y; Echeverría, Gustavo; de Waard, Jacobus H.
Afiliação
  • Castellano Realpe OJ; Facultad de Ciencias Químicas, Universidad Central del Ecuador, 170521 Quito, Ecuador.
  • Gutiérrez JC; Facultad de Medicina. Escuela de Bioanálisis, Universidad Central de Venezuela, 1053 Caracas, Venezuela.
  • Sierra DA; Instituto de Biomedicina "Dr. Jacinto Convit", Universidad Central de Venezuela, 1010 Caracas, Venezuela.
  • Pazmiño Martínez LA; Facultad de Medicina. Escuela de Bioanálisis, Universidad Central de Venezuela, 1053 Caracas, Venezuela.
  • Prado Palacios YY; Instituto de Biomedicina "Dr. Jacinto Convit", Universidad Central de Venezuela, 1010 Caracas, Venezuela.
  • Echeverría G; Facultad de Ciencias Químicas, Universidad Central del Ecuador, 170521 Quito, Ecuador.
  • de Waard JH; Instituto de Biomedicina "Dr. Jacinto Convit", Universidad Central de Venezuela, 1010 Caracas, Venezuela.
Int J Environ Res Public Health ; 17(7)2020 03 31.
Article em En | MEDLINE | ID: mdl-32244267
Three cases of severe odontogenic infections due to nontuberculous mycobacteria (NTM) in Venezuela that were directly associated with dental procedures and the finding of dental unit waterlines (DUWLs) in dental offices that were colonized with mycobacteria species was the reason for assessing the water quality of DUWLs in dental offices in two capital cities in South America, namely, Quito and Caracas. The main water supplies and the water from 143 DUWLs in both cities were sampled and especially checked for contamination with NTM. To measure the overall bacteriological quality of the water also the presence of heterotrophic bacteria, coliform bacteria, and Pseudomonas was determined. Results showed that respectively 3% and 56% of the DUWLs in Quito and Caracas yielded NTM species (up to 1000 colony-forming units (CFU)/mL). Furthermore, high and unacceptable total viable counts of heterotrophic bacteria and/or coliform bacteria and Pseudomonas were detected in 73% of the samples. We conclude that, in both cities, the water in the majority of DUWLs was contaminated with NTM and other potential pathogens, presenting a risk to human health. The detection of NTM in DUWL water with acceptable heterotrophic bacteria counts shows the need to include NTM in water quality testing. Mycobacteria are more resistant to disinfection procedures than other types of vegetative bacteria, and most testing protocols for DUWLs do not assess mycobacteria and thus do not guarantee risk-free water.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Microbiologia da Água / Biofilmes / Equipamentos Odontológicos / Micobactérias não Tuberculosas / Infecções por Mycobacterium não Tuberculosas Tipo de estudo: Etiology_studies / Risk_factors_studies Limite: Humans País/Região como assunto: America do sul / Ecuador / Venezuela Idioma: En Revista: Int J Environ Res Public Health Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Equador País de publicação: Suíça
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Microbiologia da Água / Biofilmes / Equipamentos Odontológicos / Micobactérias não Tuberculosas / Infecções por Mycobacterium não Tuberculosas Tipo de estudo: Etiology_studies / Risk_factors_studies Limite: Humans País/Região como assunto: America do sul / Ecuador / Venezuela Idioma: En Revista: Int J Environ Res Public Health Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Equador País de publicação: Suíça