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Rev Clin Periodoncia Implantol Rehabil Oral. 2008;1:5-8
TRABAJO DE INVESTIGACIÓN [PDF]

Bacilos Gram Negativos No Fastidiosos en la Microbiota Subgingival y Lingual en un Grupo de Pacientes Chilenos con Periodontitis

Non Fastidious Gram Negative Rods in the Subgingival and Lingual Microbiota in a Group of Chilean Periodontitis Patients

N. Silva1, M. Gajardo1, A. Quintero1

1Facultad de Odontología, Universidad de Chile. Chile

Resumen

Antecedentes y objetivos

Las periodontitis son un grupo de patologías que afectan los tejidos de soporte del diente. Diferentes especies de la microbiota subgingival se han asociado con los tipos de periodontitis. El aislamiento de bacilos Gram negativos no fastidiosos en sacos periodontales es un tema importante ya que algunas de estas especies podrían contribuir como causa principal a fracasos de la terapia periodontal. También es un foco de interés ubicar reservorios de estas bacterias como fuente principal de infección del saco periodontal. Así, el objetivo de este trabajo fue determinar la presencia/ausencia de bacilos Gram negativos no fastidiosos en sacos periodontales y en el dorso lingual de un grupo de pacientes chilenos con periodontitis.

Material y Método

Se tomaron muestras subgingivales de 4 sitios periodontalmente afectados y de dorso de lengua, a 27 pacientes con periodontitis.

Las muestras fueron depositadas en RTF a 4 °C para ser procesadas.

Resultados

Se obtuvo una coincidencia de un 77,7% (p= 0,0038) entre la presencia/ ausencia de bacilos Gram negativos no fastidiosos en saco periodontal y dorso lingual. 38,4% de los pacientes presentó Alcaligenes faecalis y 30,8% de ellos, Escherichia coli y Pseudomona aeruginosa.

Palabras clave

Periodontitis, bacilos Gram negativos no fastidiosos, microbiota subgingival.

Abstract

Background and aims

Periodontitis are a group of pathologies that affect support tissue of tooth. Different periodontopathic bacterial species of the subgingival microbiota has been associated with periodontitis but, at this time a great relevance has also been atributed to the presence of non-fastidious Gram negative rods in periodontal pockets,because these species could be a major cause of periodontal therapy failure,it was very interesting to localize the oral reservorie of it, in order to contribute to control the periodontal pocket infection. Thus, the aim of this work was to determine the presence and/or absence of non fastidious Gram negative rods in both, periodontal pockets and lingual dorsum of 27 chilean periodontitis patients.

Patients and Method

27 periodontal patients were recruited. Lingual dorsum and subgingival plaque samples were obtained and deposited in cold RTF (4°C) until proccessing.

Results

77,7% (p= 0,0038) of coincidence between presence and/or absence of non-fastidious Gram negative rods in both periodontal pocket and lingual dorsum was found.38,4% of these patients harbored Alcaligenes faecalis and 30,8% of them, Escherichia coli and Pseudomona aeruginosa.

Key words

Lingual reservorie, periodontitis, Gram negative non-fastidious rods.subgingival microbiota.

El Texto completo solo está disponible en PDF

 


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Trabajo recibido el 04/07/2007.
Aprobado para su publicación el 18/12/2007.

CORRESPONDENCIA AUTOR
Nora del Carmen Silva Steffens
Facultad de Odontología, Universidad de Chile
Olivos 943. Independencia. Santiago. Chile.
norasilvasteffens@hotmail.com

Copyright © 2008. Sociedad de Periodoncia de Chile, Sociedad de Implantología Oral de Chile y Sociedad de Prótesis y Rehabilitación Oral de Chile