The chewing surfaces of back teeth have deep grooves called fissures. They’re often narrower than a single toothbrush bristle, so food and bacteria collect there and are hard to clean out. Not surprisingly, this is where decay most often starts in children’s teeth. Fissure sealants are a simple way to help protect these grooves.
What is a fissure sealant?
A fissure sealant is a thin protective coating, usually made of a resin or glass ionomer material, that’s painted into the grooves of the back teeth. It flows into the fissures and hardens, creating a smooth surface that’s easier to clean and harder for bacteria to stick to.
Which teeth are sealed?
Sealants are most often placed on the permanent molars, the large back teeth. The first permanent molars usually come through around age six, and the second molars around age 12. Sealing them soon after they’ve fully come through gives the most protection during the years when they’re most vulnerable. Sometimes sealants are also recommended for premolars or for baby molars with deep grooves.
Who benefits most?
Your dentist may recommend sealants if your child:
- has deep grooves on their molars
- has had decay in other teeth
- finds it hard to brush the back teeth well
- has a diet higher in sugary foods or drinks
- has a medical condition or disability that makes tooth brushing difficult
Sealants aren’t needed for every child. Your dentist will assess your child’s teeth and risk of decay.
What does the procedure involve?
Placing a sealant is quick and doesn’t require needles or drilling of healthy tooth. The steps are:
- The tooth is cleaned and dried.
- A mild solution is applied to the chewing surface to help the sealant bond, then rinsed off.
- The tooth is dried again and kept dry with cotton rolls.
- The sealant is painted into the grooves.
- A curing light hardens the sealant in a few seconds.
- The dentist checks the bite and makes any small adjustments.
Each tooth takes only a few minutes. Most children find it easy, and they can eat normally straight afterwards.
How long do sealants last?
Sealants can last several years, but they can wear or chip over time. Your dentist checks them at each check-up and can top them up or replace them if needed.
Do sealants replace brushing?
No. Sealants protect the grooves on chewing surfaces, but decay can still form between teeth and along the gum line. Children still need to brush twice a day with fluoride toothpaste, clean between their teeth, limit sugary foods and drinks, and see the dentist regularly.
Are sealants safe?
Dental sealants have been used for decades and are widely recommended as part of preventive care. If you have questions about the materials used, ask your dentist, who can explain the options.
Cost and the CDBS
At Parramatta Dentistry, fissure seals range from $50 to $100. Fissure sealants are one of the services that may be covered by the Child Dental Benefits Schedule for eligible children. Services Australia decides eligibility. Many health fund extras policies also include sealants under preventive dental. Read our guide to the Child Dental Benefits Schedule.
When to ask about sealants
Your child’s regular check-up is a good time to ask. Your dentist can check whether new molars have come through and whether sealants would help.
Learn more about children’s dentistry in Parramatta.
Frequently asked questions
At what age should sealants be placed?
Sealants are often placed soon after the first permanent molars come through around age six, and the second molars around age 12. Your dentist will check when the teeth have fully erupted.
Do fissure sealants hurt?
No. Placing a sealant doesn’t usually need needles or drilling, and most children find it quick and easy.
Can adults have fissure sealants?
Sometimes. Adults with deep grooves and no decay may benefit, although sealants are most commonly used for children and teenagers.
What if a sealant falls off?
Sealants can wear or chip over time. Your dentist checks them at each visit and can repair or replace them if needed.
Can sealants be placed over decay?
Sealants are designed for healthy grooves or very early changes. If there’s a cavity, your dentist may recommend a filling instead.
Book at Parramatta Dentistry
Parramatta Dentistry is at Suite 25, Level 3, 27 Hunter Street, Parramatta, a short walk from Parramatta Station. We’re open Monday to Friday, 9am to 6pm, and HICAPS is on site, so you can claim from your health fund on the day and pay only the gap, if there is one. Call (02) 8090 1109 or book online.
This article is general information only and isn’t a substitute for personalised advice from your dentist.