Influence of periodontal therapy on C-reactive protein level: A systematic review and metaanalysis

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Abstract

The influence of oral infections, especially periodontal disease, on systemic diseases has been extensively discussed in the literature. Because periodontal disease is a persistent infection, it promotes an inflammatory response. C-reactive protein is a marker for inflammatory reactions that is frequently studied, since elevated levels of this protein are related to coronary events. Objective: The aim of this study was to investigate the effect of periodontal therapy on reducing the serum levels of C-reactive protein, by means of a systematic review of the literature and meta-analysis. Material and Methods: A systematic review of the English-language literature was conducted in the PUBMED-MEDLINE database, using the key words periodontal disease, C-reactive protein, periodontal therapy and periodontal treatment, in accordance with the terms for Medical Subject Headings (MeSH), to evaluate the effect of periodontal therapy on C-reactive protein levels. A qualitative analysis of studies of randomized clinical trial design was performed using CONSORT, with subsequent meta-analysis. Results: The literature search initially retrieved 46 potentially relevant studies available in the databases. From these, in accordance with the inclusion criteria, only 11 were selected, of which only 4 fulfilled the criteria of randomized clinical trial design. According to CONSORT, the studies evaluated generally presented good quality with regard to the criteria analyzed. Through meta-analysis, the reduction in mean levels of C-reactive protein (-0.231; p=0.000) after introducing periodontal treatment was estimated. The result was statistically significant, without evidence of heterogeneity between the studies (p=0.311). Conclusions: The findings indicated that non-surgical periodontal treatment had a positive effect with regard to reduction of the serum levels of C-reactive protein.

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de Freitas, C. O. T., Gomes-Filho, I. S., Naves, R. C., da Rocha Nogueira Filho, G., da Cruz, S. S., de Souza Teles Santos, C. A., … da Silva Barbosa, M. D. (2012). Influence of periodontal therapy on C-reactive protein level: A systematic review and metaanalysis. Journal of Applied Oral Science. Faculdade De Odontologia De Bauru. https://doi.org/10.1590/S1678-77572012000100002

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