If your child's dentist has suggested sealants, you might be wondering whether they are really necessary or just an added extra. Dental sealants are a simple, well-established way to protect the teeth most likely to develop cavities in childhood.
This article explains what sealants are, how they work, and whether they are worth it for your family. If you are weighing preventive options for your child in Markham, here is a clear, practical overview.
What are dental sealants?
A dental sealant is a thin protective coating painted onto the chewing surfaces of the back teeth — the molars. These teeth have natural grooves and pits that trap food and are hard to clean thoroughly, making them the most common site for childhood cavities. The sealant smooths over those grooves so plaque cannot settle in.
Applying a sealant is quick and completely painless. There is no drilling and no freezing — the tooth is cleaned, the sealant is painted on, and a special light hardens it in place.
How well do sealants prevent cavities?
Sealants are highly effective at reducing decay on the treated surfaces, especially in the years right after they are applied. They are considered one of the most cost-effective preventive measures in children's dentistry.
- Best timing: Often applied when the first permanent molars come in, around age six, and again for the second molars later.
- Painless and fast: No drilling; usually done in a single, short visit.
- A complement, not a replacement: Sealants work alongside brushing, flossing, and regular dental cleanings.
They pair well with other preventive steps, including fluoride treatments, to give teeth strong protection.
How long do sealants last?
Sealants can last several years, but they do wear over time and can chip. Your dentist checks them at routine visits and can reapply or repair them as needed. Keeping up with regular checkups is what keeps sealants doing their job.
Because they are most valuable during the cavity-prone childhood years, the protection they offer during that window is often well worth it.
Are sealants worth it for your child?
For most children, sealants are a smart, low-risk investment — particularly if your child is prone to cavities or finds thorough brushing of the back teeth difficult. Preventing a cavity is easier, cheaper, and more comfortable than treating one.
A dentist in Markham can assess your child's teeth and recommend whether sealants make sense. It is a natural topic to raise at your child's checkup — see our guide on your child's first dental visit.
Frequently asked questions
At what age should kids get dental sealants?
Sealants are often applied when the first permanent molars appear around age six, and again for the second molars in the early teens. Your Markham dentist can advise based on your child's teeth.
Do dental sealants hurt?
No. Applying a sealant is quick and painless — there is no drilling or freezing. The tooth is cleaned, the coating is painted on, and a light hardens it.
Do sealants replace brushing and flossing?
No. Sealants protect the grooves of the back teeth but do not cover the whole tooth. Daily brushing, flossing, and regular cleanings are still essential.
This article is for general educational purposes only and is not a substitute for professional dental advice, diagnosis or treatment. Treatment suitability, procedures, risks and costs vary by individual. Always consult a licensed dentist about your specific situation.
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