Salme E Lavigne1, Jane L Forrest2. 1. Senior scholar, School of Dental Hygiene, College of Dentistry, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada. 2. Professor emerita of clinical dentistry, University of Southern California, Los Angeles, CA, USA; Director, National Center for Dental Hygiene Research and Practice.
Abstract
Previous position papers have confirmed associations between periodontal disease and cardiovascular disease. Causal associations have not been confirmed and have been the source of much confusion for oral health professionals and the public. Aim: To investigate whether sufficient evidence exists for a causal relationship between periodontal disease and cardiovascular disease. Methods: The PICO question was "For adults in good general health who are diagnosed with periodontal disease, will receiving non-surgical periodontal therapy (NSPT), as compared to not receiving NSPT, lower their risk for cardiovascular diseases?" Only systematic reviews (SRs) with or without meta-analyses (MAs) of randomized controlled trials published in the English language between 2007 and 2019 were included. Databases searched included PubMed, MEDLINE, EbscoHost, CINAHL, Scopus, Cochrane Registry of Systematic Reviews, and Clinical Trials Registry. Quality assessments were conducted by both authors using the PRISMA checklist. The Bradford Hill criteria were used to determine evidence for causality. Results: Of 53 cardiovascular disease studies retrieved, 7 met the inclusion criteria, of which 6 contained MAs. Results were mixed for various periodontal interventions lowering the risk for cardiovascular outcomes. Only one SR used cardiovascular events as a direct outcome; the other 6 used various surrogate measures. Conclusions: Bradford Hill criteria analysis failed to support a causal relationship between periodontal disease and cardiovascular disease.
Previous position papers have confirmed associations between periodontal disease and cardiovascular disease. Causal associations have not been confirmed and have been the source of much confusion for oral health professionals and the public. Aim: To investigate whether sufficient evidence exists for a causal relationship between periodontal disease and cardiovascular disease. Methods: The PICO question was "For adults in good general health who are diagnosed with periodontal disease, will receiving non-surgical periodontal therapy (NSPT), as compared to not receiving NSPT, lower their risk for cardiovascular diseases?" Only systematic reviews (SRs) with or without meta-analyses (MAs) of randomized controlled trials published in the English language between 2007 and 2019 were included. Databases searched included PubMed, MEDLINE, EbscoHost, CINAHL, Scopus, Cochrane Registry of Systematic Reviews, and Clinical Trials Registry. Quality assessments were conducted by both authors using the PRISMA checklist. The Bradford Hill criteria were used to determine evidence for causality. Results: Of 53 cardiovascular disease studies retrieved, 7 met the inclusion criteria, of which 6 contained MAs. Results were mixed for various periodontal interventions lowering the risk for cardiovascular outcomes. Only one SR used cardiovascular events as a direct outcome; the other 6 used various surrogate measures. Conclusions: Bradford Hill criteria analysis failed to support a causal relationship between periodontal disease and cardiovascular disease.
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