• Glaciele Maria de Souza, Dhelfeson Willya Douglas de Oliveira, Frederico Santos Lages, Ighor Andrade Fernandes, and Gabriel Moreira FalciSauloSDepartment of Dentistry, Section of Oral and Maxillofacial Surgery, Federal University of Jequitinhonha e Mucuri Valleys, Diamantina, Brazil. Electronic address: saulofalci@hotmail.com..
• Department of Dentistry, Section of Oral and Maxillofacial Surgery, Federal University of Jequitinhonha e Mucuri Valleys, Diamantina, Brazil.
• Surg Obes Relat Dis. 2018 Aug 1; 14 (8): 1205-1216.

BackgroundThe effects of bariatric surgery can reflect in the oral cavity and can cause alterations in oral health. This high prevalence of oral alterations in the pre and post-operative periods has been highlighted in different studies.ObjectivesTo investigate the effect of bariatric surgery on periodontal status through a systematic review.MethodsElectronic search was conducted in PubMed, VHL, Web of Science, Science direct, Scopus, and Cochrane databases through May 2017. Manual search, gray literature, and counter-refence of included articles were also conducted. Eligibility criteria included observational studies that reported periodontal outcomes before and after bariatric surgery.ResultsSearch strategy resulted in 1878 articles. Following the selection process, nine studies were included in the qualitative analysis and five in the meta-analysis. Three cross-sectional studies showed risk of bias score ranging from 5 to 6 stars, and Cohort studies scored from 6 to 9 stars out of 9 possible stars on the Newcastle-Ottawa scale. The quantitative analysis showed that clinical attachment level (MD: 0.07; CI95% -0.17 to 0.31), gingival index (MD: -0.28; CI95% -1.68 to 1.11), percentage of bleeding sites (MD: -0.21; CI95% -0.77 to 0.35), and pocket probing depth (MD: 0.08 CI95% -0.14 to 0.31) were not different before and after bariatric surgery. However, the plaque index was lower after than before bariatric surgery (MD: -1.29; CI 95% -2.34 to -0.24).ConclusionsPlaque index can be improved after bariatric surgery. The present systematic review investigated the association between bariatric surgery and periodontal status from cross-sectional and longitudinal studies. A systematic search strategy was developed until May 2017. The results of this systematic review allowed the conclusion that the plaque index can be improved after bariatric surgery.Copyright © 2018 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.

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