Fluoride Varnish
In this section, we will cover:
- What is fluoride varnish?
- Why do I need it?
- What does the procedure involve?
- What are the risks?
What is fluoride varnish?
Fluoride varnish is a special sticky paste which helps protect your teeth.
It contains a high level of fluoride (a mineral which is found in most toothpastes) which makes your teeth stronger. This reduces your risk of developing tooth decay (holes in the teeth).
Because it has such a high level of fluoride, it can only be applied by your dentist or specially trained dental nurse.
It comes in many different flavours but the most common is banana/toffee flavoured.
Why do I need it?
There is strong evidence to suggest that applying fluoride varnish at least twice a year can significantly reduce the risk of tooth decay.
In the UK, fluoride varnish is used routinely in children over 3 years old but if your child is at increased risk of tooth decay, it can be used before this.
Children and young adults should have fluoride varnish applied to the teeth twice a year, or more if at increased risk of tooth decay.
Adults do not routinely have fluoride varnish applied to the teeth unless they are at increased risk of tooth decay.
What does the procedure involve?
Applying fluoride varnish to the teeth is a very simple procedure and should be applied to teeth at least twice a year (more for those at a higher risk of tooth decay).
The teeth are dried with some air or cotton roll then the varnish is painted onto the teeth with a very tiny paintbrush called a "microbrush". Sometimes, if your child is a very anxious or fidgety at the dentist, fluoride varnish can be applied with a toothbrush.
Fluoride varnish works best when the teeth are dry because it can stick to your teeth much better.
Some children are happier allowing their parents to look in their mouth. If this is the case, your dentist may allow you to place fluoride varnish on your child's teeth under their supervision.
Once the fluoride varnish has been applied, your teeth will feel a bit sticky (this stickiness will go away as you eat throughout the day and when you brush your teeth in the evening). You should not have anything to eat or drink for at least 30 minutes. This gives it time to work its magic and strengthen the teeth.
What are the risks?
Some fluoride varnish brands contain an ingredient called "colophony" which can set off an allergic reaction. If you are allergic to this or have ever been in hospital due to asthma, you should let your dentist know as it may not be safe for you to have this particular varnish used on your teeth.
If your child swallows a lot of fluoride, there is a very small risk of developing white spots on the teeth. However, only a tiny amount of fluoride varnish is used on the teeth so this risk is negligible. Scientific studies have shown fluoride varnish applied at least twice a year significantly reduce the risk of tooth decay. So the benefits far outweigh the risks!