What causes cavities?
Cavities form when bacteria in your mouth feed on sugar and produce acid that wears away tooth enamel. Over time this creates small holes (cavities) that grow if untreated. Good daily habits stop this process before it starts.
10 tips to prevent cavities
- Brush twice a day with fluoride toothpaste for two minutes.
- Floss daily to clean between teeth where brushes cannot reach.
- Limit sugary and sticky foods that feed bacteria.
- Cut down on sipping sugary drinks throughout the day.
- Drink water, especially fluoridated water, to rinse away acids.
- Don't brush immediately after acidic foods — wait 30 minutes.
- Chew sugar-free gum to boost saliva after meals.
- Eat tooth-friendly foods like cheese, vegetables and nuts.
- Replace your toothbrush every 3 months.
- Visit your dentist every 6 months for cleaning and check-ups.
Why professional cleaning matters
Even with perfect brushing, hardened tartar builds up in places you cannot reach. A professional cleaning removes it and lets your dentist spot early decay before it becomes painful or expensive. Regular visits are the backbone of good oral health care.
Signs you may already have a cavity
- Sensitivity to sweet, hot or cold foods.
- A toothache or pain when biting.
- Visible holes, pits or dark spots on a tooth.
If you notice these, see a dentist promptly — early cavities are quick and simple to treat.
Frequently asked questions
Can cavities heal on their own?
Very early enamel damage can sometimes re-mineralise with good care and fluoride, but once a true cavity forms it needs a filling — it will not heal by itself.
How often should I brush to prevent cavities?
Brush twice a day with fluoride toothpaste, and floss once daily to clean between teeth.
Does sugar really cause cavities?
Yes. Bacteria turn sugar into acid that erodes enamel, so limiting sugary foods and drinks is key to prevention.
How often should I get a dental check-up?
Every 6 months for most people, to remove tartar and catch decay early.
Are fluoride toothpastes necessary?
Fluoride strengthens enamel and is one of the most effective ways to prevent cavities, so a fluoride toothpaste is recommended.
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