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October 1, 2019

Over the last two decades, dental sealants have become a more common means to prevent tooth decay in children. What exactly are they? Are they safe? What is involved in applying them?

At-home brushing, flossing, and professional cleanings remain the best way to prevent cavities, but sometimes little hands have trouble brushing well. The grooves (called pits and fissures) that run through the surfaces of back teeth can easily catch bits of food and are hard to reach even for some adults.

daughter and dad ice cream
Dental sealants can help prevent little ones’ teeth from getting cavities. An October 2016 report done by the Centers for Disease Control found that “school-age children without sealants have almost three times more cavities than children with sealants.”

While there is no substitute for brushing and flossing, sealants can be a great second line of defense against a cavity. In fact, sealants have been shown to reduce the risk of decay by nearly 80% in molars.


A sealant is a thin, protective coating, usually a hardened liquid resin that is flowed over the pits and fissures of a child’s back teeth to create a smooth, even surface. This helps prevent cavities by making it impossible for food and drink to settle into the grooves. It also makes the tooth easier to keep clean, especially while young hands are still developing dexterity.

Any child or adult can benefit from sealants, although it’s generally recommend to get them as early as possible when the first permanent molars poke through the gums around age 6. By sealing these teeth as soon as possible, you can protect them from decay. In some cases, sealants can even be applied over teeth that already show the first signs of demineralization.


Getting a sealant is quick, easy, painless, and rarely requires anesthesia. The procedure is a lot like that of a tooth-colored filling. In fact, the sealant material is much the same.

dad and son brushing teeth
Your child’s dentist will isolate the tooth or teeth being sealed and apply a gel that etches the tooth surface. This roughens up the surface and gives the sealant something to grab onto. After the gel is rinsed away and the tooth is dried again, the liquid resin sealant material is applied. It’s flowed over the tooth surface, making sure it covers the whole surface getting into all the nooks and crannies. Then, your child’s dentist will use a blue light to harden the sealant.

Once your child’s sealants are cured, they can eat and drink as normal. And other than regular brushing and flossing, sealants essentially take care of themselves. Your child won’t even know that they are there.

At each hygiene appointment, your child’s hygienist and dentist will check the sealant making sure it’s intact. Some sealant materials are even clear, allowing their dentist to keep an eye on the tooth underneath to make sure there is no decay.

A sealant can last several years. Most sealants will need to be replaced at some point, but the process of replacing one is still the same simple procedure.

Combined with proper at-home care and regular hygiene visits, sealants are one more way to help prevent the pain and expense of a childhood cavity. Proving once again that an ounce of prevention is worth a pound of cure.

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Parkway Dental Care Kissimmee
1064 E Osceola Parkway
Kissimmee, FL 34744
New Patient: (407) 635-1196
Current Patient: (407) 932-2273
Avalon Commons Dental Care Orlando
14811 E. Colonial Dr. Suite 100
Orlando, FL 32826
New Patient: (407) 606-7209
Current Patient: (​407) 601-4206
Avalon Commons Dental Care Orlando
14811 E. Colonial Dr. Suite 100
Orlando, FL 32826
New Patient: (407) 606-7209
Current Patient: (​407) 601-4206
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