Down Syndrome and Dental Health: Cavity Risk and Prevention Strategies

Oral Health in Down Syndrome

Individuals with Down syndrome (trisomy 21) have the same susceptibility to dental caries as the general population—but specific anatomical and physiological factors modify risk.

Down Syndrome–Specific Oral Features

• Delayed eruption: Primary and permanent teeth erupt later; altered sequence.
• Hypodontia/microdontia: Missing or smaller teeth (especially lateral incisors, premolars).
• Malocclusion: Class III tendency (mandibular prognathism), open bite, crowding.
• Periodontal susceptibility: Impaired immune response (neutrophil chemotaxis defect) → earlier, more severe periodontitis.
• Bruxism, tongue thrust, mouth breathing: Common; affect enamel wear, caries pattern.
• Reduced salivary flow / altered composition: Less buffering, antimicrobial capacity.

Caries Risk Factors

• Frequent carbohydrate exposure (medications in syrup, dietary habits).
• Difficulty with oral hygiene (fine motor, sensory, cognitive).
• Gastroesophageal reflux (common) → acid erosion.
• Medication-induced xerostomia.

Prevention and Care Strategies

1. Early dental home: First visit by age 1 or tooth eruption.
2. Adapted hygiene: Electric toothbrush, floss holders, caregiver assistance.
3. Fluoride: Fluoridated water, toothpaste (1000–1450 ppm), professional varnish 2–4×/year.
4. Diet counseling: Limit sugary liquids, sticky snacks; water between meals.
5. Sealants: Pit-and-fissure on molars as soon as erupted.
6. Regular recalls: Every 3–6 months (high periodontal risk).
7. Orthodontic evaluation: Early intervention for malocclusion.
8. Behavior guidance: Tell-show-do, desensitization, sedation if needed.

Key Message

Down syndrome does not cause cavities—but it creates barriers to prevention. Proactive, adapted dental care prevents disease and preserves quality of life.