These are the two preventive measures with the strongest track record behind them, and they work in completely different ways: one hardens the tooth surface chemically, the other physically covers the grooves a toothbrush bristle cannot enter. Sealants are thin plastic coatings painted into the deep grooves of back teeth where food and bacteria collect, and combined with fluoride, which strengthens enamel, they cut the risk of cavities in children and teenagers during the years when new molars are most vulnerable.
Why people book fluoride and dental sealants
- Children and teenagers with newly erupted adult molars
- A history of repeated decay despite good brushing
- Deep grooves in back teeth that trap food
- Dry mouth from medication or medical treatment
- Exposed root surfaces after gum recession
- Orthodontic appliances that make cleaning harder
What the visit usually covers
- Professionally applied fluoride varnish
- Higher-strength fluoride toothpaste on prescription
- Resin sealants over the biting surfaces of molars
- Dietary advice targeting the frequency of sugar
- Reviewing the sealants at each check-up
What each involves
Both are quick, painless and preventive rather than restorative.
- Fluoride varnish painted onto clean, dry teeth
- Avoiding eating or drinking for a short period afterward
- Sealant: cleaning and preparing the grooves of the molar
- Flowing resin into the grooves and curing it
- Checking the bite
- Reviewing sealants at each subsequent check-up
Book the preventive visit
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Sealants in Vermont schools and in the research
The American Dental Association's clinical guideline, written with the American Academy of Pediatric Dentistry, recommends sealants for the chewing surfaces of primary and permanent molars in children and adolescents. Its evidence summary reports a 73 percent lower risk of new decay lesions on sealed molars compared with fluoride varnish alone.
Vermont's 802 Smiles Network puts sealants into schools. In the 2021-22 school year it reported 3,180 children receiving oral health services through the network, and 434 of them received sealants.
Many dental plans cover sealants on children's teeth, usually under one procedure code, so ask for the coverage rule before the visit and not after it.
Fluoride in Burlington-area drinking water
Burlington began fluoridating its water in 1953, and the Champlain Water District, which serves eight member communities, began in 1973. Both now add fluoride at 0.7 parts per million, the level the U.S. Department of Health and Human Services recommends for systems that fluoridate. Households on private wells are outside that system and can have their well water tested for fluoride through a laboratory before a dentist decides whether a supplement fits a child.
Common questions
Fluoride and Dental Sealants: questions people ask
Are sealants only for children?
They are most commonly placed on newly erupted adult molars in children and teenagers, but adults with deep grooves and a decay history can benefit too.
Do sealants last forever?
No: they wear and can chip, which is why they are checked at each visit and repaired or replaced when needed.
Can decay start under a sealant?
It is uncommon when the tooth was sound and properly prepared, which is why the assessment before placing one matters.
Is fluoride varnish the same as toothpaste fluoride?
No. Varnish is a much higher concentration applied professionally and left in contact with the tooth, which is why it is done in the practice.
Who benefits most from fluoride and sealants?
Children and teenagers with newly erupted adult molars. People with a history of repeated decay despite good brushing, or deep grooves in back teeth that trap food. Also people with dry mouth from medication or medical treatment, exposed root surfaces after gum recession, or orthodontic appliances that make cleaning harder.
How do fluoride and sealants each work?
Fluoride hardens the tooth surface chemically. Varnish is painted onto clean, dry teeth, and you avoid eating or drinking for a short period afterward. A sealant physically covers the grooves a toothbrush bristle cannot enter. The grooves are cleaned and prepared, resin flows in and is cured, and the bite is checked. Both are quick and painless.