Paediatric Dentistry
Fissure sealants for children
A protective coating on back teeth helps stop decay starting in the grooves.
Purpose
Prevent decay
Where
Back teeth
Drilling
None
Discomfort
None
Overview
The chewing surfaces of back teeth have deep grooves that trap food and are hard to clean. A sealant fills these grooves with a thin protective layer.
Sealants are quick, painless and need no drilling. They are most useful soon after the adult back teeth come through.
What to know
- Seals the deep grooves on back teeth
- Quick and painless, with no drilling
- Most useful on new adult molars
- Helps prevent decay in tricky-to-clean spots
Common questions
Do sealants hurt?
No. The tooth is cleaned, the coating is painted on and set with a light.
How long do they last?
Often several years. Your dentist checks them at each visit and tops them up if needed.
Which teeth get sealed?
Usually the adult back molars, soon after they come through.
Do sealants replace brushing?
No. Your child still needs to brush, floss and visit the dentist.
Related topics
Fluoride
Fluoride strengthens enamel and helps protect your teeth from decay.
Your child's first visit
An early, friendly first visit helps your child feel at ease at the dentist.
Tooth decay
Damage to the tooth caused by acid from plaque bacteria.
Dental sealants
A thin protective coating that shields the chewing surface from decay.
Dr Rick Iskandar · Reviewed June 2026