PEDIATRIC DENTISTRY RESOURCES
Dental Sealants for Kids
What Are Dental Sealants?
Dental sealants are thin, protective coatings made from a safe, tooth-colored resin material that is applied to the chewing surfaces of your child's back teeth — the molars and premolars. These teeth have deep grooves, pits, and fissures where food particles and bacteria easily become trapped. Even with careful brushing, a toothbrush's bristles often cannot reach the bottom of these narrow crevices. Sealants fill in those grooves, creating a smooth, easy-to-clean surface that prevents bacteria from causing decay.
The application is quick, painless, and requires no drilling or numbing. Each tooth takes just one to two minutes, and your child can eat and drink normally right afterward. According to the CDC, approximately 90% of cavities in school-age children occur on the chewing surfaces of back teeth — exactly the surfaces that sealants protect.
At Glendale Dental Wellness, we routinely recommend sealants as part of our comprehensive pediatric dental care because they offer powerful protection with zero discomfort. For many families, sealants are the single most impactful step they can take to keep their child cavity-free.
How Effective Are Dental Sealants?
The evidence supporting dental sealants is strong. The CDC reports that sealants prevent 80% of cavities in back teeth for the first two years after application, and continue to protect against 50% of cavities for up to four years. Children aged 6 to 11 without sealants have almost three times as many first-molar cavities as children with sealants.
From a cost-effectiveness standpoint, sealants are hard to beat. The cost of applying a sealant to a single tooth is a fraction of what it costs to treat a cavity with a filling. Combined with regular brushing, flossing, fluoride treatments, and dental checkups, sealants create a powerful multi-layered defense against tooth decay during the years when children's teeth are most at risk.
When Should My Child Get Sealants?
Timing matters because the goal is to protect teeth before cavities have a chance to start. The first permanent molars erupt around age 6 and the second permanent molars around age 12. We recommend sealing these molars as soon as they have fully erupted through the gum line. Premolars with deep grooves and baby teeth in high-risk children may also benefit from sealant protection.
Sealant Application, Longevity, and Safety
The sealant process is simple, painless, and completed in just minutes. Here is everything parents need to know about what happens and what to expect.
Step 1: Clean the Tooth
We thoroughly clean the chewing surface to remove any food particles, plaque, or debris from the grooves before applying the sealant material.
Step 2: Prepare & Apply
A mild acid-etch solution creates a slightly rough texture for bonding. After rinsing and drying, the liquid sealant is painted onto the chewing surface, flowing into every groove.
Step 3: Cure with Light
A special blue curing light hardens the sealant in about 20 seconds, creating a durable protective shield. Your child can eat and drink immediately afterward.
Longevity & Maintenance
With proper care, sealants last 5 to 10 years. We inspect them at every cleaning and checkup and can easily reapply if a sealant has partially worn away.
Safety Record
Sealants have been used for over 50 years and are endorsed by the ADA, AAPD, CDC, and WHO. BPA exposure from sealants is less than from handling a store receipt.
Insurance Coverage
Most dental insurance plans cover sealants for children as a preventive benefit, typically at 80-100% coverage. Our team can help verify your specific benefits before the appointment.
Caring for Your Child's Sealants
Sealants protect chewing surfaces, but sides and between teeth still need daily cleaning with fluoride toothpaste and floss.
Chewing on ice, hard candy, pen caps, or other non-food objects puts excessive force on sealants and can cause them to chip.
Taffy, caramels, and gummy candies can pull at sealants. Encouraging your child to avoid these helps sealants last as long as possible.
We check sealant condition at every routine visit. If a sealant has worn, reapplication is quick and painless.
Combining sealants with professional fluoride varnish provides the strongest cavity prevention available for children.
Seal first molars around age 6 and second molars around age 12, as soon as they fully erupt through the gum line.
Frequently Asked Questions About Dental Sealants
Can sealants be placed over an existing cavity?
In some cases, sealants can be placed over very early-stage decay — tiny areas of demineralization that have not yet progressed into a full cavity. The sealant seals off the bacteria from their food source, effectively stopping the decay from advancing. However, sealants cannot be placed over cavities that have already broken through the enamel and require a filling. During your child's examination, we will determine whether each tooth is a candidate for a sealant or needs a different approach.
Do sealants replace the need for brushing and flossing?
No. Sealants protect the chewing surfaces of back teeth, but they do not cover the sides of teeth or the spaces between them — areas where cavities can also develop. Your child still needs to brush twice a day with fluoride toothpaste and floss daily to protect all tooth surfaces. Think of sealants as one important layer of protection within a comprehensive oral care routine that includes brushing, flossing, fluoride, a healthy diet, and regular dental checkups.
Are dental sealants only for children?
Sealants are most commonly applied to children and teenagers because their newly erupted permanent teeth are most vulnerable to decay. However, adults who have deep grooves in their molars and no existing fillings or decay on those teeth can also benefit from sealants. If you are cavity-prone and have unrestored molars, ask us whether sealants might be a good option for you as well.
Do sealants hurt when they are applied?
Not at all. The sealant application process is completely painless. There is no drilling, no needles, and no numbing required. Your child simply sits in the dental chair while we clean the tooth, apply a few liquids, and cure the sealant with a small light. Most children do not even realize the procedure has happened. The entire process takes just one to two minutes per tooth.
Can sealants fall off?
Sealants can occasionally chip or come off, though this is uncommon with modern materials and proper application technique. We check the condition of your child's sealants at every routine dental visit. If a sealant has worn or come off, we can easily reapply it. Certain habits like chewing ice or sticky candy can increase the chance of sealant loss, so we recommend avoiding those. Even if a sealant is partially lost, the tooth still received protection during the time the sealant was in place.
How much do dental sealants cost?
Dental sealants are one of the most affordable preventive treatments available. The cost per tooth is significantly less than the cost of filling a cavity. Most dental insurance plans cover sealants for children, typically up to age 14, as part of preventive care benefits. We recommend checking with your insurance provider for specific coverage details. Even without insurance, sealants are a worthwhile investment — preventing a single cavity saves far more in treatment costs down the road.
