Fissure Sealants

Why Seal Children’s Teeth?

Thanks to the introduction of fluoride in our water supply and in toothpaste, the decay of children’s teeth has been reduced. However, many children are still getting decay.

For the majority of cases decay starts in the pits and grooves of the biting surfaces of the back teeth. These groves are so narrow that even the bristles of a toothbrush are too thick to get in and clean them. Germs from plaque live in the grooves and make acid which causes decay.

What are Fissure Seals?

Fissure Sealants are white plastic coatings applied to the biting surfaces of the permanent back teeth, blocking up the grooves, providing protection from decay.

Fissure Sealing is a painless procedure that should not require injections or drilling.

How are Teeth Sealed?

The tooth is first cleaned and dried. Then a thin layer of liquid plastic is placed into the groove in the same way that polish is applied to a fingernail. The liquid hardens into a tough layer which prevents plaque coming into contact with the groove and decaying the tooth.

When Should Teeth be Sealed

Sealants are best placed once the first permanent molars appear at around six or seven years and then again when the second molars arrive at around eleven or twelve years.

How Long do Sealants Last?

Usually from two to seven years. Sealants should be checked regularly and replaced if lost.

What are the Results of Sealing Teeth?

The combination of sealants and fluorides will virtually eliminate decay in the permanent teeth of many children.


The following are all still very important for healthy teeth and gums.

  • Brushing and flossing at least twice a day,
  • Regular dental checks and
  • A Sensible diet low in sugar




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03 5429 3322