Protective Sealants
A sealant is a thin protective coating painted onto the chewing surface of a back tooth, filling in grooves too narrow for a toothbrush bristle to reach. It takes about ten minutes per tooth, needs no drilling and no numbing, and is one of the least eventful appointments in dentistry.
The problem a sealant solves
Look closely at a molar and you will see the chewing surface is not flat. It is a landscape of ridges and narrow valleys, and in many people those valleys are deeper and thinner than a toothbrush bristle. Food and bacteria settle in there and stay, because nothing can physically get in to sweep them out. That is why the majority of childhood cavities appear on the chewing surfaces of back teeth rather than anywhere else.
A sealant closes that gap. It is a thin plastic coating, flowed into the grooves and set hard, turning an uncleanable surface into a smooth one a brush can actually manage. Studies have found that sealants can reduce the incidence of cavities by as much as 80 percent — a large effect for a ten-minute appointment with no drilling in it.
It is worth being clear about what a sealant is not. It is not a filling: nothing is removed from the tooth and no decay is being treated. It only protects the surface it covers, so it does nothing for the sides of teeth — those still need floss. And it is prevention rather than repair, which is exactly why the timing of it matters.
What to expect
About ten minutes, and four steps. There is no injection, no drill, and nothing that needs recovering from — children can eat as soon as they leave.
1. The tooth is cleaned
The chewing surface is cleaned and dried thoroughly. This is the step that actually determines how long the sealant lasts, so it is not rushed — a sealant placed over anything left behind will not hold.
2. A bonding agent goes on
A conditioning gel is applied for a few seconds to give the enamel a very slightly roughened surface for the sealant to grip, then rinsed away. It tastes faintly sour and that is the whole of the sensation.
3. The sealant is painted on
The material is flowed into the grooves with a fine brush, filling them level. Nothing is drilled and nothing is removed from the tooth at any point.
4. It is hardened and checked
A curing light sets the sealant in seconds, then Dr. Lokitis checks the bite so nothing sits high. If a spot feels odd when your child bites down afterwards, say so — it is a very quick adjustment.
Who sealants suit
Children of about six, when the first permanent molars arrive at the back of the mouth. This is the window worth catching. Those teeth erupt with their grooves at their deepest, into a mouth where brushing is still a work in progress, and they have to last a lifetime. Sealing them shortly after they come through is the single best-timed use of the treatment.
Teenagers, when the second permanent molars come through around twelve, and often the first molars again if earlier sealants have worn. The teenage years tend to combine a less rigorous brushing routine with more snacking, which is not a helpful pairing.
Adults with frequent decay. Sealants are not only for children. If you keep needing fillings on chewing surfaces, or you have deep grooves in sound teeth, or a dry mouth from medication has changed how quickly decay progresses, sealing those surfaces is reasonable and often overlooked. Dr. Lokitis will tell you honestly whether your teeth are candidates — heavily restored or already decayed surfaces are not.
How long they last, and what they cost
Each treatment gives about five years of protection, and sealants often last somewhere between five and ten years before they need replacing. They wear gradually rather than failing suddenly, and chewing is what wears them — so a child who grinds or works through a lot of hard, sticky food will get less life out of them than a sibling who does not.
We check them at every routine visit, which is the part that makes the whole thing work. A sealant that has chipped at one edge is worse than no sealant, because it creates a sheltered gap. Spotted at a six-month checkup it is topped up in minutes; left for three years it is a cavity. This is a treatment that depends on the follow-up rather than on the appointment itself.
Sealants are among the more affordable things we do, and most insurance plans cover them for children — usually with an age limit and a per-tooth allowance, and adult coverage is less consistent. Rather than guess, call us with your plan details and we will check your benefits before anything is booked. You will know the cost first either way.
Still brush, still floss
A sealant protects one surface of one tooth. It does nothing for the sides where teeth touch each other, nothing for the gum line, and nothing for the front teeth. Children sometimes hear sealants as permission to relax, and it is worth heading that off: the treatment removes the surface that brushing could never reach, so that brushing can look after the ones it can.
Sealants sit alongside the rest of prevention rather than replacing any of it — fluoride at cleanings, something between the teeth once a day, and the twice-yearly check that catches what all of that missed. For children we coach brushing at the visit rather than just handing over a toothbrush, and children's dentistry covers the rest of what a growing mouth needs, including mouthguards once sport gets serious.
If your child's first permanent molars have come through, or you are not sure whether they have, bring them in and we will look. We are on Old Courthouse Road in Vienna, minutes from Tysons Corner and convenient to McLean, Dunn Loring, Merrifield, Oakton, and Falls Church, open Monday through Thursday. Book a visit or call (703) 893-1603.
Frequently Asked Questions
Do sealants hurt? expand_more
No. Nothing is drilled and no anesthetic is needed, because the sealant goes on top of the tooth rather than into it. Your child will feel a cotton roll holding the cheek back, a brief sour taste from the conditioning gel, and some air blowing to dry the tooth. Most children are surprised by how quickly it is over.
How long do sealants last? expand_more
Each treatment gives about five years of protection, and many last between five and ten years. They wear down gradually rather than failing all at once, and we check them at every routine visit. A worn or chipped sealant is topped up in minutes, which is why the six-month checkups matter more than the original appointment.
At what age should my child get sealants? expand_more
Around six, when the first permanent molars come through at the back. Those teeth arrive with their grooves at their deepest, into a mouth where brushing is still improving, so sealing them soon after they erupt is the best-timed use of the treatment. The second permanent molars follow at about twelve and are usually worth sealing too.
Are sealants covered by insurance? expand_more
Most plans cover sealants for children, typically with an age limit and a per-tooth allowance. Adult coverage is less consistent. Call us with your plan details and we will check your benefits before anything is booked — you will know the cost either way.
Can adults have sealants? expand_more
Yes. They are worth considering if you keep getting decay on chewing surfaces, if you have deep grooves in otherwise sound teeth, or if medication has left you with a dry mouth. Dr. Lokitis will tell you whether your teeth are suitable — a surface that is already decayed or heavily restored is not a candidate.
Do sealants mean my child can brush less? expand_more
No, and it is worth saying so out loud at home. A sealant protects one surface of one tooth. The sides where teeth touch, the gum line, and all the front teeth are unaffected, and those still need brushing twice a day and something between the teeth once a day.
Can a sealant be placed over a cavity? expand_more
No. A sealant seals a healthy surface; it does not treat decay, and covering a cavity would simply hide it while it carried on underneath. If Dr. Lokitis finds decay on a chewing surface it needs a filling instead. Where a spot is only just beginning to soften, she may recommend watching it with fluoride rather than treating it yet.
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