Large study ties poor childhood oral health to later heart r

Denrtal Tribune International

Thu. 23. April 2026

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COPENHAGEN, Denmark: Poor oral health in childhood is known to have consequences far beyond the mouth, including effects on growth, and adult oral health and cardiovascular disease have been consistently associated. However, the impact of childhood oral health on this has been little studied. New longitudinal research in Denmark has now suggested links between childhood oral disease and cardiovascular events decades later. The findings point to a potentially overlooked window for prevention early in life.

The large nationwide cohort study followed more than 560,000 individuals over several decades. It looked at the association between caries and gingivitis in childhood and the incidence of atherosclerotic cardiovascular disease in adulthood, measured by ischaemic heart disease, myocardial infarction and ischaemic stroke.

The analysis showed a clear gradient: individuals with severe childhood caries or gingivitis had a modestly higher incidence of atherosclerotic cardiovascular disease in adulthood compared with those with low levels of disease. This pattern was seen in both males and females and remained evident after accounting for education and Type 2 diabetes. The association appeared to be somewhat stronger in females, and the authors suggest that this might reflect true sex-related differences in susceptibility or differences in baseline cardiovascular risk.

Importantly, trajectories mattered. Children whose oral health remained poor or worsened over time had elevated risk later in life, suggesting that cumulative exposure may matter more than disease severity at a single point in childhood.

The findings add to existing evidence linking oral and systemic health and suggest that this relationship may go back to childhood. Although the observed associations were modest in magnitude, the authors note that these could translate into substantial population-level impact given the high prevalence of both oral disease and cardiovascular conditions. This positions childhood oral disease as a potentially modifiable early-life contributor to later cardiovascular risk.

Mechanistically, research has pointed to chronic inflammation and bacterial dissemination from the oral cavity as plausible pathways. Oral infections may contribute to low-grade systemic inflammation or allow bacteria to enter the bloodstream, potentially influencing atherosclerotic plaque development.

The study does not establish causality and could not fully account for lifestyle confounders such as diet or smoking. However, its scale, longitudinal design and detailed registry data strengthen the evidence that early oral health may have long-term cardiovascular implications.

For clinicians, the message is clear: prevention and management of oral disease in children may offer benefits extending well beyond oral outcomes. Integrating dental care into broader preventive health strategies could represent a practical step towards reducing future cardiovascular burden.

Beyond the established links between oral health and cardiovascular disease, dentistry is increasingly being integrated into broader healthcare as a setting for screening, early risk identification and referral for systemic disease. Recent studies have highlighted the potential of artificial intelligence to identify early vascular risk indicators on dental CBCT scans, as well as the use of blood pressure screenings in dental offices to similarly anticipate heart disease.

The article, titled “Childhood oral health is associated with the incidence of atherosclerotic cardiovascular disease in adulthood”, was published online on 1 April 2026 in the International Journal of Cardiology.