Poor Masticatory Capacity and Blood Biomarkers of Elevated Cardiovascular Disease Risk in the Community: The Paris Prospective Study III

Objective: The mechanisms underlying the association between low number of masticatory units and cardiovascular disease remain unclear. Under a nutritional framework, we hypothesized that poor masticatory capacity could represent an early sign of elevated cardiovascular disease risk as evaluated by circulating markers of systemic inflammation and cardiomyocyte stress or damage. Approach and Results: In this cross-sectional analysis of the Paris Prospective Study III, a community-based observational study, 4837 adults aged 50 to 75 without cardiovascular disease history underwent a full-mouth clinical examination and plasma NTproBNP (N-terminal natriuretic propeptide), hs-CRP (high-sensitivity C-reactive protein), IL-6 (interleukin-6), hs-TNI (high-sensitivity troponin I) were measured using highly sensitive technics. Poor masticatory capacity was defined as <5 functional masticatory units, that is, pairs of opposing natural or prosthetically replaced posterior teeth. In linear regression analysis accounting for sociodemographic factors, cardiovascular disease risk factors, gingival inflammation, and body mass index, poor masticatory capacity was significantly associated with lower levels of NTproBNP (β=−0.11, P =0.045). The significant association between poor masticatory capacity and higher IL-6 in multivariable analysis was confounded by body mass index. There was no association between functional masticatory units and hs-TNI even in unadjusted analysis. Conclusions: The present findings support a nutritional pathway whereby diet alterations and the resulting abdominal obesity associated with poor masticatory capacity may contribute to the higher level of IL-6 and to the lower level of NTproBNP, respectively.