Dental Sealants Cost: Price per Tooth for Kids and Adults in 2026

Dental sealants cost $30 to $65 per tooth in 2026. Sealing a child’s four first permanent molars costs about $120 to $260, and all eight permanent molars about $240 to $520. For most children it costs nothing: insurance, Medicaid, CHIP and school programs commonly pay for it.

A sealant is a thin plastic coating painted onto the chewing surfaces of the back teeth, where food and bacteria pack into deep grooves that a toothbrush can’t reach. It takes a few minutes per tooth, with no drilling and no numbing.

What sealants cost

Two published figures anchor the range. Humana’s 2026 pricing tool put a sealant at $34 to $65 per tooth, about $49 on average. A 2024 national cost study cited by Guardian put the average at $42. Big-city practices sit at the top, and community health centers at the bottom.

When to get them

The ADA’s timing is simple: the first permanent molars come in around age 6 and the second molars around age 12. Sealing each set soon after it comes in protects the grooves during the years cavities are most likely to start. Some dentists also seal premolars or baby molars with deep grooves.

The payoff is unusually well measured. According to the CDC, sealants on permanent molars prevent up to 80% of cavities for two years and keep protecting against 50% for up to four years. Children aged 6 to 11 without sealants are almost three times as likely to have cavities in their molars as children with them.

Sealants for adults

Adults can get sealants too; the ADA says both children and adults can benefit, though the earlier the better. They make sense on a molar that is healthy but has deep grooves, especially if you get cavities elsewhere. They don’t make sense on a tooth that already has a filling or decay in the groove, which needs a filling instead.

The practical difference is the bill: insurance rarely pays for adult sealants, so you pay the $30 to $65 per tooth yourself. On a cavity-prone mouth it is still cheaper than the filling it prevents.

Who pays for sealants

• Children’s dental insurance. Dental coverage is an essential health benefit for children under the Affordable Care Act. Children’s plans commonly pay for sealants on permanent molars as preventive care, usually with an age limit and once per tooth. Check those two rules before a reapplication.
• Medicaid and CHIP. Both cover dental care for children in every state, which in practice includes sealants. See Medicaid dental coverage by state.
• School sealant programs. Many schools host programs that apply sealants at school for free. The CDC calls them a way to reach children who may not get regular dental care, and estimates that each sealed tooth saves more than $11 in treatment costs.
• Adults: usually out of pocket. Sealants are a qualified HSA and FSA expense; see HSA and FSA for dental work.

How long sealants last

The ADA says sealants often last several years before they need to be reapplied. They wear down with chewing and can chip, so your dentist checks them at each checkup. A worn sealant is quick and cheap to repair. Leaving it worn lets the groove collect bacteria again.

Are sealants safe?

Yes. The ADA addresses the common worry directly: there is a tiny amount of BPA in sealants, but not enough to cause harm, and everyday sources such as receipts, cosmetics and dust expose people to more. Application is painless: the tooth is cleaned, a mild gel roughens the surface for a few seconds, the sealant is painted on, and a blue light hardens it.

Sealants vs. the cost of a cavity

A sealant doesn’t replace brushing, fluoride toothpaste or checkups. But on a child’s molars it is the cheapest dental work with the best-documented return. If cost is the obstacle, a community health center or dental school can apply sealants for less.