Dental Sealants for Kids: Cost, Benefits, and What to Expect

Dental sealants -- thin protective coatings applied to the chewing surfaces of back teeth -- are one of the most evidence-supported preventive measures in pediatric dentistry. CDC data on dental sealants show that school-age children without sealants are almost three times more likely to develop first molar cavities than children who have sealants. The American Dental Association and the American Academy of Pediatric Dentistry both recommend sealants for children as part of a comprehensive prevention strategy. This guide explains what sealants are, when they are typically recommended, what the procedure involves, and what they cost -- so you can have an informed conversation with your child's dentist.

What Are Dental Sealants?

Dental sealants are resin-based materials flowed into the pits and fissures of back teeth -- primarily the molars -- and hardened with a curing light. The result is a smooth, sealed surface that prevents food particles and bacteria from collecting in the grooves where cavities most commonly form.

The chewing surfaces of molars have deep, narrow grooves that are difficult to clean with a toothbrush, even with good brushing technique. These grooves are the reason that approximately 90 percent of childhood cavities occur in back teeth, according to CDC oral health data. Sealants effectively eliminate these retention areas by filling them with a protective layer before decay can begin.

It is worth noting what sealants do not do. According to the ADA, sealants protect the grooved chewing surfaces of the teeth they cover -- they do not protect the smooth sides between teeth (which is where flossing matters), and they do not eliminate the need for brushing, fluoride, or regular dental checkups. Sealants are one layer of a broader prevention strategy, not a substitute for the others.

Simplified illustration of how sealant material fills molar grooves. Not a clinical diagram.

How Much Do Dental Sealants Cost?

The per-tooth cost of a dental sealant typically falls in the range of $30 to $60 without insurance, based on American Dental Association fee survey data and published cost ranges from Delta Dental and Cigna. Because sealants are typically applied to multiple teeth at a single appointment -- most commonly the four permanent first molars around age six -- a full first-molar sealant session may run $120 to $240 for four teeth.

Costs vary by geographic market and by dental office. Some practices include sealant placement as part of a preventive appointment and do not itemize it separately; others bill each tooth individually using CDT code D1351.

Insurance coverage. Most dental insurance plans classify sealants for children as a preventive service covered at 100 percent of the allowed fee with no patient deductible, according to Delta Dental and Cigna coverage guides. Coverage typically applies to permanent molars on children up to a specific age, which varies by plan (commonly up to age 14 or 16). Some plans also cover sealants on primary molars for children assessed at high cavity risk. CHIP and Medicaid include sealants as a covered preventive benefit in most states.

Before the appointment, it is worth verifying with your insurance plan whether sealants are covered for your child's age and for the specific teeth involved. This is a routine inquiry that your dental office can often make on your behalf.

To understand the broader context of what dental checkup visits cost, see our guide on dental cleaning cost.

How Are Dental Sealants Applied?

The sealant procedure is straightforward, brief, and does not require local anesthesia in most cases. The American Academy of Pediatric Dentistry describes the typical process as follows.

First, the tooth surface is cleaned and dried. An acidic etching solution -- typically phosphoric acid gel -- is applied to the chewing surface for a short period, then rinsed off. This etching step creates a microscopically rougher surface that allows the sealant material to bond securely to the tooth enamel. The tooth is dried again, and the liquid sealant resin is applied to the grooves. A curing light is used to harden the material within about sixty seconds. The dentist or hygienist then checks the bite to confirm the sealant does not interfere with how the teeth come together.

The entire process for one tooth typically takes a few minutes. Having four first molars sealed in a single appointment takes fifteen to thirty minutes for most children.

No drilling or removal of tooth structure is involved. Because no anesthesia is required and the procedure is painless, most children tolerate it without difficulty. The AAPD notes that sealants are among the most straightforward preventive procedures in pediatric dentistry and rarely require behavior management beyond a brief explanation of what to expect.

Are Dental Sealants Safe for Children?

Dental sealants have been used for decades and have an established safety record, but some parents have questions about their composition, particularly regarding BPA.

Some sealant materials are derived from compounds that may contain trace amounts of bisphenol-A (BPA) or related compounds. The ADA and FDA have both reviewed the available evidence and state that the amount of BPA released during and after sealant placement is far below the levels that could cause harm. A 2016 review cited by the ADA found that salivary BPA exposure from sealants peaks briefly during application and drops to baseline within hours.

The FDA's position is that the health benefit of sealants in preventing tooth decay substantially outweighs the minimal and transient BPA exposure. Parents who remain concerned can ask their dentist whether BPA-free sealant materials are available; some practices stock these as an alternative.

The ADA and AAPD both affirm that dental sealants are safe for use in children when applied by trained dental professionals under established guidelines.

How Long Do Sealants Last?

According to the AAPD, dental sealants can last up to ten years when properly maintained, though individual durability varies. Sealants can wear down, chip, or partially detach over time, particularly in patients with a heavy bite or those who chew on hard foods regularly.

Your dentist checks the condition of sealants at routine visits as a standard part of the examination. Sealants that have partially worn away can be reapplied. Importantly, a sealant that is still fully intact continues to provide the protective function it was designed for, even years after placement.

The CDC notes in its school sealant data that sealants remain effective at preventing cavities while they are in place. This is why maintaining regular dental checkups is part of getting the full value from sealants. For guidance on visit frequency, see our guide on how often to see a dentist.

Sealants vs. Fluoride: Do Children Need Both?

Sealants and fluoride address different aspects of cavity prevention and are typically used together rather than as alternatives.

Fluoride -- whether from fluoride toothpaste, drinking water, or professional fluoride applications -- works by strengthening enamel throughout the tooth and remineralizing early-stage decay. It provides protection on all tooth surfaces. According to NIDCR and CDC data on community water fluoridation, fluoride reduces the rate of tooth decay substantially at the population level.

Sealants provide targeted physical protection specifically in the grooves of back teeth -- the areas most vulnerable to decay. They do not strengthen enamel and do not provide the systemic or surface-wide benefit that fluoride does.

The ADA's position is that both are part of a comprehensive preventive strategy for children. Neither replaces the other, and neither replaces daily brushing, flossing, and dietary habits that limit sugar frequency. Your child's dentist can advise on which preventive measures are most appropriate given your child's specific cavity risk level.

For a broader overview of evidence-based habits for preventing tooth decay, our guide on how to prevent cavities covers dietary and hygiene factors alongside professional preventive care.

Questions to Ask Before Your Child Gets Sealants

If your child's dentist recommends sealants, a few questions can help you understand the recommendation and make a confident decision.

• Which specific teeth are being recommended for sealants, and why those teeth?
• Is my child at elevated, moderate, or lower cavity risk in your assessment?
• Are sealants on primary (baby) teeth being recommended, and if so, what is the clinical rationale?
• How much will this cost with and without my insurance?
• Which sealant material do you use, and is a BPA-free option available?
• How will we know if the sealant chips or wears, and how often will you check them?
• Are there alternatives if I prefer to wait, and what is the risk of waiting?

These are all reasonable questions that a dentist or dental hygienist should be able to answer directly. For a broader guide to asking good questions at the dentist, see our guide on how often to see a dentist for guidance on making the most of routine visits.

For personalized guidance on whether sealants are appropriate for your child, always consult a licensed dentist or pediatric dentist who has examined your child's teeth.