02/10/2026
Most people think brushing at night is only about preventing cavities.
Research suggests it may also benefit the heart.
During sleep, saliva production decreases, allowing oral bacteria to become more active. When plaque and bacteria remain on the teeth and gums overnight, they can contribute to gum inflammation and increase the overall bacterial burden in the mouth.
Researchers have found a strong connection between oral health and cardiovascular health. Chronic gum disease has been associated with increased systemic inflammation, while certain oral bacteria have been identified in atherosclerotic plaques. Although brushing alone cannot prevent heart disease, maintaining good oral hygiene may help reduce one source of inflammation that can affect the body.
Nighttime brushing is especially important because it removes plaque before the longest period of bacterial activity begins. Along with flossing and regular dental care, it is one of the simplest daily habits that supports both oral and overall health.
A few minutes before bed may be helping more than just your smile.
Credit: Dental daily