Causal Effect of Tooth Loss on Cardiovascular Diseases

Area of Science:

• Public Health
• Epidemiology
• Cardiovascular Research

Background:

• Associations between poor oral health and cardiovascular diseases are documented, but causal links remain unclear.
• Tooth loss is a common oral health issue with potential systemic implications.
• Establishing causality is crucial for targeted public health interventions.

Purpose of the Study:

• To investigate the causal relationship between tooth loss and cardiovascular diseases (CVDs) in US adults.
• To quantify the impact of tooth loss on the incidence of coronary heart disease (CHD) and stroke.
• To leverage instrumental variable analysis for causal inference.

Main Methods:

• Utilized data from 722,519 US adults (Behavioral Risk Factor Surveillance System, 2006-2010).
• Employed instrumental variable analysis with childhood fluoride exposure as an instrument for adult tooth loss.
• Assessed the association between tooth loss and history of CHD or stroke.

Main Results:

• Childhood fluoride exposure was a strong predictor of adult tooth loss.
• Each lost tooth was associated with a 1.04 percentage point increase in the probability of CHD.
• Tooth loss significantly increased stroke risk in adults aged 60 and older.

Conclusions:

• Findings support a causal effect of tooth loss on cardiovascular diseases in US adults.
• The impact of tooth loss on CVD risk appears more pronounced in older populations.
• Public health strategies addressing oral health may benefit cardiovascular outcomes.