What is fissure sealant?

Fissure Sealant is a liquid that is applied to your molar teeth to prevent cavities from forming. Molar teeth have an uneven surface that is prone to trapping food. Some pits and grooves in your teeth can be too small for your toothbrush to reach, creating perfect conditions for the growth of bacteria and the development of cavities. Fissure Sealants will fill these grooves, and even out the surface of the tooth, helping you to maintain a higher standard of oral hygiene.

Typical treatment length

A few minutes per tooth (approx. 30 minutes if all being treated at once)

What is the process?


Fissure sealants are most commonly applied to the permanent molars soon after they have erupted.

The permanent molars begin to erupt at around 6 years of age, and development is normally complete by the time your child is 11 years old. Application of fissure sealant in the early years can help to protect your teeth for years to come.


Applying a Fissure sealant is a quick and painless procedure. Your teeth are first cleaned and then a solution that slightly roughens the surface is applied – this helps the sealant to adhere to the surface of your teeth. The sealant is applied to dry teeth in the form of a tooth coloured resin. The resin is hardened using a bright light. You will be provided with special glasses to protect your eyes from the light.


A Fissure Sealant does need to be checked regularly to ensure there is no excessive wear. Although It should typically last up to 3-5 years. Fissure Sealants can be re-applied to ensure decay does not develop underneath the resin.