Restorative care
Tooth-colored fillings for kids
When a cavity has worn a small hole in a tooth, a filling stops the damage and rebuilds what was lost. We use natural-looking materials, gentle numbing, and plenty of patience so the visit feels manageable for your child.
When does a child need a filling?
A filling is for a tooth that already has a cavity: decay has broken through the hard outer enamel and left a hole. Once that happens, the tooth can't rebuild itself, and the hole usually keeps growing.
Cavities in children often don't hurt at first, so many are found at routine visits. We check each tooth and, when needed, take low-dose digital X-rays, which show decay hiding between back teeth. To learn how decay starts and what early warning signs look like at home, read our guide to cavities in children: causes, early signs, and prevention.
Why we treat cavities in baby teeth
Baby teeth help children chew, speak clearly, and hold space for adult teeth, and some stay until the end of the tooth-losing years, which run from about age 6 to 12. Their enamel is thin, so decay can spread quickly. A small filling now can help your child avoid a bigger repair later.
When a filling may not be the best fit
Fillings suit small and medium cavities. If decay has destroyed much of a baby molar, a crown for a baby tooth usually holds up better. If decay has reached the soft pulp in the center, your child may need a baby root canal (pulp therapy) first. We'll show you the X-ray and explain what we see.
Options for very early decay
Not every spot needs drilling. The earliest stage of decay is a chalky white or light brown patch where enamel has lost minerals but hasn't broken open, and it can sometimes harden again. Depending on what we find, we may suggest:
- Watching it closely. We compare the spot at each visit, sometimes with X-rays, to make sure it isn't growing.
- Fluoride varnish. A concentrated coating helps weakened enamel take minerals back in. The American Academy of Pediatric Dentistry (AAPD) recommends it for children at risk of cavities, typically every 3 to 6 months. See fluoride treatments for kids.
- Sealing the grooves. On back teeth, an early weak spot in a groove can sometimes be sealed to help stop it. Learn about dental sealants for kids.
- Small changes at home, such as fewer sugary sips and snacks between meals.
What about silver diamine fluoride?
Silver diamine fluoride (SDF) is a liquid some dentists brush onto a cavity to help slow or stop decay, without numbing or drilling. It's sometimes discussed for very young children, for kids who can't yet sit for a filling, or to buy time before treatment.
The trade-offs are real. SDF permanently stains the decayed area dark brown or black, which shows on front teeth. It doesn't restore the tooth's shape, it usually needs reapplying, and it isn't used for children with a silver allergy. Ask us if you'd like to weigh the pros and cons for your child.
Tooth-colored filling materials
Most fillings for children today can be made in shades that match natural teeth. Because these materials bond to the tooth, the dentist often needs to remove less healthy tooth to hold them in place.
Composite resin
Composite blends fine glass-like particles with a dental resin. It's shaded to match the tooth, placed in thin layers, and hardened with a blue light. It handles chewing well and looks natural on front teeth, but it needs a dry surface to bond.
Glass ionomer
Glass ionomer bonds chemically to the tooth and releases a little fluoride over time. It's more forgiving of moisture, which helps with small baby teeth, spots near the gumline, and children who find it hard to hold still. It wears faster than composite, so it's usually chosen where chewing forces are lighter.
| Composite resin | Glass ionomer | |
|---|---|---|
| Look | Closely matched to the tooth's shade | Tooth-colored, a little less lifelike |
| Strength | Holds up to heavy chewing | Wears sooner on biting surfaces |
| Moisture during placement | Tooth must stay dry | Tolerates some moisture |
| Fluoride | Little or none | Releases small amounts |
| Common uses | Front teeth and chewing surfaces | Baby teeth, gumline spots, very young children |
What about silver fillings?
Silver-colored amalgam fillings are durable. The U.S. Food and Drug Administration (FDA) recommends that people at higher risk from mercury exposure, including young children, receive alternatives to amalgam when possible and appropriate. It doesn't recommend removing amalgam fillings that are in good condition, so if your child already has one, we'll simply keep an eye on it.
How we keep fillings comfortable for kids
For many kids, the hardest part is not knowing what comes next. With our tell-show-do approach, we explain each step in kid-friendly words and show the tools before we use them. Parents are welcome chairside, so your child always has a familiar face nearby.
Numbing, one step at a time
We start with a flavored numbing gel, then give the local anesthetic slowly, so it feels more like pressure than a sting. We confirm the tooth is fully numb before starting, and your child can raise a hand any time for a break. Very small, shallow fillings sometimes need little or no numbing.
Laughing gas and other options
Nitrous oxide (laughing gas) can help an anxious child relax. Children stay awake, the calming effect starts within minutes, and it fades a few minutes after they breathe regular oxygen. For kids who need many fillings, are very young, or have special health care needs, we may discuss oral sedation or general anesthesia in a hospital or surgery center. Our page on sedation and laughing gas for kids explains each option.
What happens during a filling visit
Most fillings take a single visit. Here's the usual sequence:
- Numb the area
Gel goes on first, then a gentle local anesthetic.
- Keep the tooth dry
Cotton rolls or a small rubber shield hold back saliva and the tongue.
- Remove the decay
We clean out the soft, decayed part and save as much healthy tooth as we can. Kids hear a buzzing sound, so we let them listen first.
- Rebuild the tooth
The surface is conditioned, then the material goes in layer by layer and is hardened with a blue light.
- Shape and check
We smooth the filling and have your child bite on thin colored paper to make sure the bite feels even.
Then your child picks a prize from the treasure chest.
After the visit: what to watch for
The filling is set before your child leaves. The numbness lasts longer, usually a few hours.
Watch for lip and cheek biting. Children often chew or suck on a numb lip, cheek, or tongue without realizing it, which can leave a sore, swollen spot that looks alarming the next day. Until feeling returns, keep an eye on your child and offer drinks or soft foods instead of chewy snacks.
- Mild soreness of the nearby gum for a day or so is normal. If your child needs a pain reliever, ask your pediatrician which one, and follow the package label.
- Brief sensitivity to cold or sweets can follow a deeper filling and usually fades on its own.
- Brush and floss as usual that night, including around the new filling.
- Call us at (916) 770-4567 if the bite feels uneven once the numbness wears off, pain gets worse, or you notice swelling.
Lowering the odds of another cavity
A filling repairs one tooth but doesn't change what caused the cavity. Regular checkups and cleanings, fluoride toothpaste twice a day, and fewer sweet snacks between meals all help.
Think your child might have a cavity?We'll take a look, explain the options, and help you plan the next step.
Request an appointmentCost and insurance for fillings
Most dental plans include some coverage for fillings, depending on details such as your deductible and coinsurance. Some pay a different amount for tooth-colored fillings on back teeth than on front teeth.
We accept most PPO plans and verify your benefits before treatment, so you'll know your expected share up front. Our insurance and payment information explains how estimates work, and new families can read what to expect at a first visit.
Filling FAQ
Questions parents ask about fillings
Still wondering about something? Give us a call and we'll talk it through.
Does my child need a filling if the tooth doesn't hurt?
Often, yes. Cavities usually don't cause pain until they're fairly deep. Treating one while it's small typically means a smaller, simpler filling and less chance that the decay reaches the nerve.
Will my child feel anything while the filling is placed?
Once the tooth is numb, children usually feel pressure, vibration, and water spray, but not pain. If your child signals that something feels sharp, we stop and add more numbing before continuing.
Why might the dentist suggest a crown instead of a filling?
When a cavity is large or spreads across several surfaces of a baby molar, there may not be enough strong tooth left to support a filling. A crown covers the whole tooth and often lasts better until the baby tooth falls out.
Can a tooth-colored filling chip or come out?
It can happen, though it isn't common. Chewing ice, grinding, or new decay at the edge can chip or loosen a filling. We check every filling at regular visits, so call us if one ever feels rough or missing.
Can several fillings be done in one appointment?
Sometimes. It depends on your child's age, comfort, and where the cavities are. We may group fillings by side of the mouth so only one side is numb at a time.
Keep exploring
Related care and parent guides
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