[Hinews] Observed annually on July 22, World Brain Day is an initiative by the World Federation of Neurology to raise awareness of brain health and neurological disorders. The 2025 campaign, themed "Brain Health for All Ages," emphasizes the need to maintain brain health from prenatal period through old age.

In South Korea, cerebrovascular disease cases are rising. According to the Health Insurance Review and Assessment Service, approximately 1.17 million people were diagnosed with cerebrovascular conditions in 2022, a 21.1% increase from 2018. The increase is especially pronounced among adults in their 20s and 30s.

Cerebrovascular diseases, such as stroke and vascular dementia, occur when blood vessels in the brain become blocked or rupture. While hypertension, diabetes, and hyperlipidemia are established risk factors, recent studies point to periodontal disease—commonly known as gum disease—as a significant contributor to brain health risks.

Gum Disease: A Systemic Threat to Brain Health
Gum disease is increasingly recognized as more than a dental issue; it serves as a systemic health warning, particularly in relation to brain function. A study in the journal Brain Sciences found that individuals with periodontitis have a 2.3 times higher risk of stroke compared to those with healthy gums. Research published in the Journal of the American Geriatrics Society also linked poor gum health to cognitive decline and an increased risk of dementia.

Once seen as a localized dental issue, gum disease is now considered a systemic threat with serious implications for brain health. Fortunately, proper oral hygiene can significantly mitigate these risks.

Gum disease increases the risk of stroke and dementia, highlighting its role as a systemic health concern. (Image: ClipArtKorea)
Gum disease increases the risk of stroke and dementia, highlighting its role as a systemic health concern. (Image: ClipArtKorea)


Preventing Gum Disease: Focus on Gums and Interdental Spaces

Dental plaque, a sticky film of bacteria and food debris that accumulates between teeth and along the gumline, is the primary cause of gum disease. Effective prevention focuses on thorough cleaning of these vulnerable areas.

The Korean Association of Oral Health recommends the Modified Bass Technique for brushing: Hold the toothbrush like a pencil, angle the bristles at 45 degrees toward the gumline, gently vibrate in place 5–10 times, and then sweep toward the tooth surface.

The Modified Bass Technique targets the gumline for effective plaque removal and gum health. (Photo courtesy of Philips)
The Modified Bass Technique targets the gumline for effective plaque removal and gum health. (Photo courtesy of Philips)


How to Remove Plaque Without Damaging Gums

Effective brushing removes plaque without irritating the gums, requiring careful control of pressure. For those who find manual brushing challenging, sonic electric toothbrushes offer an alternative. These devices use air bubbles to gently clean interdental spaces and the gumline while reducing excessive pressure that could harm gums.

Consistency Is Key: Daily Habits for Gum Disease Prevention

Preventing gum disease starts with disciplined oral hygiene. Experts advise brushing within one minute after meals for at least two minutes, three times daily.

Dr. Yong-duk Park, president of the Korean Association of Oral Health, stressed the importance of brushing technique. "Gum disease is preventable with proper oral care, yet 19.5 million people in South Korea received treatment for it last year," he said. "We aim to expand education and raise awareness of standard brushing practices."

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