The Smile Abode

Prevention of Tooth Decay

Preventive Dentistry

How can you prevent tooth decay?

Tooth decay can be prevented with:

  • Fluoride therapy
  • Pit and fissure sealants

What are pit and fissure sealants?

Pit and fissure sealants, also known as dental sealants, are a preventive dental treatment designed to protect teeth from decay. They are applied to the grooves and depressions on the chewing surfaces of back teeth and the cingulum of front teeth to shield these areas from bacteria and plaque buildup.

How are pit and fissure sealants applied?

The application of pit and fissure sealants is a simple and painless process. A bonding agent is first applied to the teeth to help the sealant adhere properly. The sealant is then applied to the tooth enamel and hardened, forming a protective barrier against decay.

How long does it take to apply pit and fissure sealants?

The application process is quick, typically taking 5 to 45 minutes, depending on the number of teeth being treated. Proper application is essential for long-lasting results, as intact sealants effectively protect teeth from decay.

How long do fissure sealants last?

Sealants can last up to 10 years, but their longevity depends on how well you care for your teeth. Regular dental check-ups are necessary to ensure they remain intact and effective.

How does fluoride help protect teeth?

Fluoride strengthens tooth enamel by helping it rebuild and re-mineralize, reversing early signs of decay and preventing further damage.

What are the different ways to apply fluoride?

Fluoride can be applied using:

  • Fluoride gel: Applied in a tray placed over the teeth.
  • Fluoride varnish: Applied with a small brush.

How is fluoride varnish applied?

Fluoride varnish is applied by painting the liquid onto the top and sides of each tooth using a small brush. The varnish, which is sticky at first, hardens upon contact with saliva. Once applied, the hardened varnish can be felt with the tongue but cannot be easily removed. The process is painless and takes just a few minutes.

What precautions should be taken after fluoride therapy?

After fluoride application, no special precautions are typically required, but your dentist may offer specific advice. In general:

  • Soft foods at mild temperatures (cold or warm) are recommended immediately after application. Avoid hot foods and beverages for 4–6 hours.
  • Brushing and flossing should be avoided for 4–6 hours or until the following morning to ensure the varnish stays effective.


Consistent dental care and regular check-ups are key to maintaining the benefits of fluoride therapy and sealants.

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