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Preventive Care

How to prevent cavities: complete 2026 guide

Cavities are the world's most common chronic disease — and almost completely preventable.

According to WHO, cavities affect ~2.5 billion people. The good news: they're almost completely preventable. Most cavities I treat could have been avoided with simple changes.

Why cavities happen (not just from sweets)

Bacteria metabolize carbohydrates and produce acids that dissolve enamel. Cavities come from: bacteria + substrate + time + susceptibility.

5 daily habits that make the difference

1. Brush twice daily — correctly

Morning and evening, minimum 2 minutes. Bass technique — short vibratory motions, not aggressive horizontal strokes.

2. Floss OR interdental brush

Your toothbrush doesn't reach between teeth. That's where 40% of adult cavities form. Evening is mandatory.

3. Water — your friend

Drink water after every meal. Simplest habit with major impact.

4. Limit snacking

It's not HOW MUCH sugar but HOW OFTEN. Each snack triggers a 30-40 minute "acid attack".

5. Xylitol gum

Bacteria can't metabolize xylitol. Stimulates saliva. Studies show up to 70% reduction in cavities.

What to look for in toothpaste

The only ingredient with proven efficacy is fluoride. Look for 1,000-1,500 ppm. Premium brands aren't automatically better.

Electric vs. manual — the verdict

Cochrane studies confirm: electric brushes remove 21% more plaque. The 800-2000 MDL investment pays off in 6 months through avoided treatments.

Professional cleaning — how often?

Standard: every 6 months. Smokers, orthodontics, crowns — every 3-4 months.

Common mistakes

  • Brushing right after acidic foods (fruits, wine, coffee) — wait 30 minutes.
  • Excessive brush pressure — causes gum recession.
  • Replacing toothbrush too rarely — every 3 months.
  • Ignoring bleeding gums — early sign of gingivitis.
  • Eating before bed without brushing.

Conclusion

Cavities aren't inevitable. With the right routine, your risk drops by 80%. At Avicenna, your first consultation is free.

Author

EC

Dr. Evghenii Colesnic

Restorative Dentist

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