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Fissure Sealants

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Fissure Sealants Overview

Fissure sealants are a safe and painless way of protecting your children’s teeth from tooth decay.

It is a material coating which covers the chewing surfaces of the back adult teeth, creating a smooth surface that is easy to clean. The sealant forms a hard shield that keeps food and bacteria from getting into the tiny grooves in the teeth.


Most tooth decay in children occurs in the back teeth. Typically they are placed as soon as the adult molar teeth come through. As long as the sealants remain adhered to the tooth, cavities can be prevented. Although sealants do wear naturally and may become damaged over time, they have the potential to remain effective for five years or longer, despite the heavy pressures endured by teeth during chewing each day.

We have prepared some answers to questions that we are frequently asked about Fissure Sealants below.

Your question not answered?  Please call our Patient Care Team on 046 9033309


Additional Information

How is it done?

Placing fissure sealant’s is a simple pain-free procedure which can be done by any of our dentists and does not require any anaesthetic. The teeth are cleaned, etched and then dried. The liquid coating (sealant) will then be painted on the tooth/teeth and set with a light until its hard. It will take less than 5 mins per tooth to place the fissure sealant. Following this procedure, you are able to eat and drink straight away as the sealant will be completely set.

Fissure sealants are clear so blend in well with the teeth and can’t be seen when talking.

When is the best time to get sealants?

The best time to get fissure sealants done is between the age of 5 – 14 (when the first and second permanent molars appear).

How long do they last?

Fissure sealants can last between 5 – 10 years and will be checked regularly by your dentist when you go in for check-up appointments. They can be replaced if they fall out or become worn down over time, but replacement is not always required. This is because teeth are most prone to decay when they first erupt but after a number of years, they are strong enough to avoid becoming damaged.

Can they be seen on the teeth?

Because they are clear in colour and are placed on the back teeth, they cannot be seen when a child talks or smiles.

Do you still need to brush your teeth?

Yes. Sealants are only one part of a child’s preventative dental care. It is still important that teeth are brushed twice a day with fluoride toothpaste. The sealed surfaces will now be easier to clean when tooth-brushing. It is also important that children don’t eat a lot of sugary foods and drinks especially between meals. These should be kept as treats or for special occasions.

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