Restorative & Tooth Problems
Dental sealants
A thin protective coating that shields the chewing surface from decay.
What it is
Protective coating
Where
Grooves of back teeth
Comfort
Painless, no drilling
Best for
New adult molars
Overview
A dental sealant is a thin coating painted into the deep grooves on the chewing surfaces of back teeth. These grooves trap food and plaque and are hard to clean.
The sealant smooths the surface so it is easier to keep clean and less likely to decay. It is quick, painless and used most often on children's adult molars.
What to know
- Protects deep grooves on back teeth
- Quick and painless, with no drilling
- Often used on children's new adult molars
- Makes the chewing surface easier to clean
- Lasts for years and can be re-applied
Common questions
Who should have sealants?
They are most useful on children's new adult molars, but some adults benefit too.
Does it hurt to get a sealant?
No. There is no drilling. The tooth is cleaned, the coating painted on and set with a light.
How long do sealants last?
Often several years. Your dentist checks them at visits and can top them up if needed.
Do sealants replace brushing?
No. They protect the grooves, but you still need to brush, clean between the teeth (floss, interdental brushes or a water flosser) and limit sugar.
Related topics
Tooth decay
Damage to the tooth caused by acid from plaque bacteria.
Fluoride
Fluoride strengthens enamel and helps protect your teeth from decay.
Fissure sealants for children
A protective coating on back teeth helps stop decay starting in the grooves.
Check-up & clean (routine visit)
A regular visit to check your teeth and gums and remove built-up plaque.
Dr Rick Iskandar · Reviewed June 2026