Brushing Teeth for Kids by Age: Toothpaste Amount and Routine
Start brushing the day the first tooth shows. Use a rice-grain smear of fluoride toothpaste under 3 and a pea-sized blob from 3 to 6, twice a day, and have your child spit without rinsing. Brush for them until about 7 or 8. That covers most of it; below is the full brushing teeth routine for kids by age, how to win the nightly battle with a toddler, and the tooth signs that need a dentist soon.
Quick facts
- When to start: as soon as the first tooth appears, often around 6 months
- How often: twice a day, and the bedtime brush matters most
- How long: about 2 minutes
- Toothpaste: fluoride, at least 1,000 ppm on the label; smear under 3, pea-sized from 3
- After brushing: spit, don’t rinse, nothing but water until morning
- First dentist visit: by the first birthday
Prefer to listen? This post as a 5 min video · Video page with transcript
At what age should you start brushing teeth?
From the first tooth. Milk teeth have thinner enamel than adult teeth, so a cavity can form and spread quickly, even in a one-year-old. Brushing from day one also means the habit is simply part of life by the time your child is old enough to argue.
Here’s the whole plan by age band:
| Age | Toothpaste | Who brushes |
|---|---|---|
| Under 6 months | None before teeth | Nothing needed; you can wipe gums with a clean damp cloth |
| 6 to 12 months | A smear the size of a rice grain | You, with a soft baby brush |
| 1 to 3 years | A smear | You, every time |
| 3 to 6 years | A pea-sized blob | You, or the child first and you finish |
| 6 to 8 years | Pea-sized | The child, with you checking at night |
| Over 8 | Pea-sized, family paste | The child, with spot checks |
For babies under 6 months, the only rule that matters for teeth is the feeding one: nothing but breast milk or formula. No honey on a dummy, ever, and never under 1 year for any reason. Teething signs and myths are covered in what teething does and doesn’t cause.
How much toothpaste for kids, and which kind
The amount is small on purpose. Young children swallow most of what goes on the brush, and swallowing a lot of fluoride regularly under about 6 can leave white flecks on the adult teeth (fluorosis). The right amount gives the protection without that.
- Smear: a thin scrape of paste across the bristles, about the size of a grain of rice.
- Pea-sized: exactly that, not a stripe along the whole brush like the adverts.
- Fluoride: look for the ppm on the tube. At least 1,000 ppm protects children’s teeth; many family pastes carry 1,350 to 1,500 ppm, which is fine at pea-size from age 3.
- Fruit-flavoured kids’ pastes: fine, but some are low-fluoride or fluoride-free, so check the label rather than the cartoon.
Did you know? Your child’s adult teeth are already forming inside the jaw while the milk teeth are in use.
The brushing teeth routine for kids, step by step
Twice a day: once in the morning, and once last thing at night after the final milk or snack. The night brush is the important one, because saliva, the mouth’s natural rinse, slows right down during sleep.
- Get the angle. For a baby or toddler, sit on the floor with their head in your lap, looking up at you. For older children, stand behind them in front of a mirror and tip their chin up.
- Put the right amount of paste on a small, soft brush: smear under 3, pea-sized from 3.
- Brush in small circles where the teeth meet the gums, tilting the bristles toward the gum line.
- Cover every surface: outsides, insides and the chewing tops of the back teeth, where cavities start most often.
- Keep going for about 2 minutes. A song or a sand timer helps.
- Spit, don’t rinse. The fluoride left on the teeth keeps working. Babies can’t spit, and that’s fine with a smear.
- Nothing to eat or drink after the night brush, except plain water.
Missed the night brush because your toddler fell asleep on the sofa? Just do the morning one properly. If it’s happening most nights, move the brush earlier, straight after the last milk and before the sleepy stage.
Brushing toddler teeth: tips that work
Most 1 to 3 year olds fight the brush at some point. That’s normal. A few tricks make the two minutes easier:
- Let them hold a second brush and “brush” yours, or a doll’s, while you brush theirs.
- Brush in the bath, where they’re already relaxed and wet.
- Sing the same short song every time, so they know exactly when it ends.
- Offer two brushes and let them choose. Choice cuts protest.
- Keep it brief and calm on bad nights rather than turning it into a fight. Even 30 seconds of real brushing beats none.
Toothbrush by age, and when to change it
Use a small-headed, soft brush sized for the age range on the pack. Electric brushes are fine from about 3 years if your child likes them. Change the brush every 3 months, or sooner when the bristles splay out, since a flattened brush cleans far less well. Tying the change to the start of each school term or season makes it easy to remember.
The routines that cause cavities (and simple swaps)
Tooth decay isn’t only about how much sugar a child eats. It’s about how often teeth are bathed in it. A child sipping juice all afternoon has sugar on their teeth all afternoon.
- Bottle to bed: milk or juice pooling around the front teeth overnight is the classic cause of early decay. After the last milk, brush, then only water.
- Sweet chai several times a day: a cavity routine in a cup, plus caffeine. Our guide to bachon ko chai covers the age question.
- Sticky sweets and biscuits between meals: keep sweet things to mealtimes, when saliva flow is highest.
- A sweetened dummy: never. Plain dummy only.
Miswak and neem datun have cleaned teeth in South Asian homes for generations, and many older children enjoy using them with supervision. They clean mechanically but don’t give the fluoride protection that toothpaste does, so for children they’re an extra, not a swap. Our neem datun vs toothpaste comparison has the details.
Myth: milk teeth don’t matter because they fall out
Milk teeth hold the space for adult teeth, help children chew and speak clearly, and some back ones stay until 10 to 12. A decayed milk tooth can hurt, get infected, and sometimes damage the adult tooth forming underneath. They’re worth protecting. For how mouth care changes at other life stages in the family, see oral care for every life stage, and for more child health guides, Bachon Ki Sehat.
Book a dentist soon for white chalky patches or brown or black spots on the teeth, a hole you can see, gums that bleed every time despite gentle brushing, or a child who avoids chewing on one side. Go the same day for toothache that wakes the child at night, a swollen gum or face, or a pimple-like bump on the gum. A swollen face with fever, or swelling spreading toward the eye or neck, needs emergency care now. If a child has eaten a large amount of toothpaste, such as a good part of a tube, go to hospital and take the tube with you. For pain, painkiller amounts are worked out from the child’s weight on the pack or by a pharmacist; never combine two products with the same medicine. An adult tooth knocked out needs a dentist within the hour: hold it by the top, not the root, and carry it in milk.
Kids’ brushing questions, answered
At what age should you start brushing a baby’s teeth?
As soon as the first tooth appears, often around 6 months. Use a soft baby brush and a rice-grain smear of fluoride toothpaste twice a day.
How much toothpaste should a child use?
A rice-grain smear under 3 years, and a pea-sized amount from 3 onwards. More than that isn’t needed and increases how much is swallowed.
How often should toddlers brush their teeth?
Twice a day, morning and last thing at night. The night brush matters most, and nothing but water afterwards.
Can toddlers use fluoride toothpaste?
Yes, in a smear the size of a rice grain. Fluoride is what protects young teeth from decay. The small amount is what keeps it safe when they swallow it.
Until what age should parents brush their child’s teeth?
Until about 7 or 8. Before then, most children can’t clean every surface well. Let them have a go, then finish the job and check at night.
Should kids rinse after brushing?
No. Spit out the extra paste but don’t rinse, so fluoride stays on the teeth longer.
My toddler refuses to brush. What can I do?
Try brushing in the bath, a short song, letting them choose the brush or brush your teeth first. Keep it calm and quick on bad nights.
When should a child first see a dentist?
By the first birthday, or within about 6 months of the first tooth. The dentist then sets how often to come back.
How often should a child’s toothbrush be changed?
Every 3 months, or sooner if the bristles bend outwards. Linking it to each new school term or season helps.
Is it bad if my child swallows toothpaste?
Swallowing a smear or pea-sized amount is expected and fine. If a child eats a large amount, such as a good part of a tube, go to hospital with the tube.
Are kids’ toothpastes without fluoride better?
Not for preventing cavities. Fluoride-free pastes don’t give the same protection. Choose one with at least 1,000 ppm fluoride and use the right amount.
Can children use miswak instead of a toothbrush?
Older children can use miswak as an extra, with supervision. It doesn’t give fluoride protection, so keep fluoride toothpaste twice a day.
What do brown spots on my child’s teeth mean?
They can be early decay or staining. Either way, a dentist should look soon, since early decay in milk teeth can spread quickly.