Do elderly edentulous patients with a history of periodontitis harbor periodontal pathogens?: Periodontal pathogens in elderly subjects

University of Taubaté, São Paulo, Brazil.
Clinical Oral Implants Research (Impact Factor: 3.89). 06/2010; 21(6):618-623. DOI: 10.1111/j.1600-0501.2009.01892.x


The presence of periodontal pathogens in the oral cavity may impact implant survival. Therefore, this study aimed to determine the prevalence of Campylobacter rectus, Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Prevotella intermedia, Tannerella forsythia, Treponema denticola, Eikenella corrodens and Parvimonas micra in a specific elderly population with a history of periodontitis who have never worn dentures.
Thirty dentate subjects (mean age 61.7+/-7.05 years) and 30 edentulous subjects (mean age 65.8+/-8.05 years) were included in this cross-sectional study. Microbiological samples of cheek mucosa and the dorsum of the tongue were taken from all subjects. In addition, sulcus samples were taken from the dentate group. All samples were analysed using a bacterial DNA-specific polymerase chain reaction.
All the pathogens studied were detected in dentate and edentulous subjects. When cheek and tongue samples were combined, C. rectus, A. actinomycetemcomitans and E. corrodens presented with a similar prevalence in both groups, whereas the other species were more prevalent specifically in the dentate group (P<0.05). In dentate subjects, P. intermedia and T. denticola were present in higher frequencies in the cheek mucosa (26.67% and 66.67%, respectively), whereas P. gingivalis and T. forsythia were more prevalent in the tongue samples (26.67% and 56.67%, respectively).
Periodontal pathogens may persist in the oral cavity of edentulous subjects who have had periodontal disease, even 1 year after the extraction of all teeth and in the absence of other hard surfaces in the mouth.

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Available from: Sheila Cavalca Cortelli, Nov 12, 2014
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    • "(6.1%) Shibli et al. (2008) (167) The microbiota of peri-implant disease revealed higher total colony counts than in peri-implant healthy sites. Porphyromonas gingivalis, T. denticola and T. forsythia were present in supra-and submucosal sites of peri-implantitis Fernandes et al. (2010) (71) Porphyromonas gingivalis and T. forsythia were more prevalent on the tongue than on the cheek. Diverse niches of the oral cavity can harbor periodontopathic bacteria "
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