Abstract

Atherosclerotic cardiovascular disease (ASCVD) is a major global health concern linked to significant morbidity and mortality. Recent research has explored the relationship between ASCVD and periodontitis, a prevalent inflammatory oral condition. Epidemiological studies have suggested a strong association between periodontitis and ASCVD, even proposing that periodontal disease could be a modifiable risk factor for cardiovascular conditions. This review critically analyzes the current evidence for a potential causal role for periodontitis in ASCVD. While randomized controlled trials (RCTs) have demonstrated reductions in surrogate markers of cardiovascular risk following periodontal interventions, these studies remain inconclusive regarding their direct effects on cardiovascular events. Preclinical studies in animal models have suggested a potential causal relationship between periodontitis and ASCVD, proposing several biological mechanisms to explain this connection. These studies, however, are limited in their ability to definitively prove causality. The positive associations observed in epidemiological studies between periodontitis and ASCVD may also be influenced by various biases, such as confounding and collider stratification. Moreover, our systematic review of Mendelian randomization studies on the causal relationship between periodontitis and ASCVD found no evidence of a genetic causality, further challenging the causal hypothesis. This review underscores the need for further high-quality research clarifying the relationship between periodontitis and ASCVD to better guide clinical practice and public health policy.

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