Analysis of the impact of periodontal disease management before the onset of type 2 diabetes mellitus on medical costs using administrative claims database

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ObjectiveAlthough periodontal disease management has been shown to reduce the medical costs of diabetes mellitus, no studies have investigated management before the onset of type 2 diabetes mellitus. Therefore, this study examined the association between periodontal disease management before the onset of type 2 diabetes mellitus and medical costs. MethodsWe extracted information for periodontal disease management status from Japanese medical claims and specific health check-up databases among 4010 patients with periodontal disease and type 2 diabetes mellitus aged ≥ 30 years who had continued periodontal disease management for 2 years after diabetes onset. We divided patients into two groups: those who had received periodontal disease management for 2 years before and 2 years after onset and those who had received periodontal disease management for only 2 years after the onset of type 2 diabetes mellitus. ResultsThe HbA1c level in patients without periodontal disease management during the year of diabetes onset improved by 0.13 % in male and 0.24% in female 2 years later, while that in the group with periodontal disease management improved by 0.49 % and 0.74%, respectively. The medical costs were significantly lower in the group with periodontal disease management 2 years later than in the group with no periodontal disease management. ConclusionsRegular periodontal disease prevention and management under professional care before type 2 diabetes mellitus onset contribute to improved health and reduced medical costs.