Tooth decay is the most common chronic condition of childhood — but it’s also largely preventable. Understanding what causes cavities helps you stop them before they start.
What causes cavities in children?
Cavities form when bacteria in the mouth feed on sugars and produce acid that wears away the enamel. In children, the usual culprits are frequent snacking, sugary or sticky foods and drinks, bedtime bottles, and brushing that misses spots.
- Frequent sugary snacks and drinks (including fruit juice)
- Sticky foods that cling to the teeth
- Bottles of milk or juice at bedtime
- Inconsistent or rushed brushing
- Not enough fluoride
How to prevent them
Prevention is simple and effective: brush twice daily with fluoride toothpaste, keep sugary foods to mealtimes, offer water between meals, and keep up regular check-ups and cleaning. Protective dental sealants and fluoride add a powerful extra layer of defence, and what your child eats — and how often — matters too; see our guide to sugar, diet and your child’s teeth.
What if my child already has a cavity?
Caught early, a cavity is easily treated with a simple tooth-coloured filling. Left alone, decay spreads and can reach the nerve, needing pulp therapy. That’s why early detection at routine pediatric visits is so valuable — and why milk teeth are worth treating even though they eventually fall out.
Have a question about your child’s teeth?
We’re always happy to help. Book a gentle visit at Tiny Tooth Dental, Vrindavan Colony.
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