Effect of periodontal disease and decline of masticatory ability on the incidence of lifestyle-related disease

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In this study, cross sectional analysis on the relationship between the oral health related factors (including occlusal force and masticatory performance) and incidence of impaired glucose tolerance was performed in 1032 urban residents who participated the regular health check-up. After adjustment of confounding factors, it was found that periodontal disease and decrease of occlusal support had relationship with impaired glucose tolerance. Also cross sectional analysis on 3771 subjects revealed that having less than 19 teeth was the risk factor to be metabolic syndrome. These results suggested the possibility that decline of masticatory function caused by tooth loss as well as periodontal disease influence on the general health.