How Much Toothpaste Should a Child Use? Amounts by Age, and Why Fluoride Is Safe

The amount is what keeps it safe

Your toddler swallows the toothpaste every time, so it is tempting to switch to a fluoride-free paste or to skip toothpaste altogether. Keep the fluoride and control the amount instead, because the measured amount is what makes a swallowed dose safe, not your child's ability to spit.

Fluoride is the part of toothpaste that protects teeth against decay. The Health Ministry's clinical guideline on tooth decay recommends brushing twice a day with fluoride toothpaste for every child aged six and under, whatever their risk of cavities.

How much toothpaste for each age?

A paediatric dentist from PDGI, the Indonesian dental association, gives the measures to use. Under three, use a smear the size of a grain of rice. From three, when most children can rinse, use a blob the size of a corn kernel.

A rice-grain smear is smaller than most parents expect. Press the tube lightly so the paste covers only the tips of a few bristles in the middle of the brush, rather than running along its length. A corn-kernel amount is a small round dot, still far less than the stripe shown on toothpaste packaging.

Squeeze it yourself. A child who holds the tube squeezes until the brush is full, and a tube left by the sink is an open invitation to eat it.

Is it safe if my child swallows it?

At these amounts, yes. The same dentist says fluoride toothpaste can be used from the first tooth without waiting until your child can rinse, because the guided amount stays safe even when it is swallowed.

The risk comes from too much fluoride, again and again, while the adult teeth are forming. The Health Ministry describes this as fluorosis, white or brown spots on the permanent teeth, and notes that it usually develops in children under eight. Its advice is to supervise brushing so your child uses the right amount and does not swallow it, and to give fluoride supplements only when a dentist or doctor recommends them.

So the rules at home are simple. You put the paste on the brush, the tube lives on a high shelf, and nobody eats toothpaste as a snack, however good the strawberry flavour.

Starting with the first tooth

Cleaning starts as soon as the first tooth appears. The Health Ministry advises cleaning the teeth and gums in the morning and at night before sleep, using damp gauze or a soft-bristled brush.

Gauze wrapped round your finger is easiest for the first one or two teeth. Move to a small, soft baby brush as more teeth come through, because bristles reach the gaps between teeth that gauze cannot, and add the rice-grain smear from the very first tooth.

Brushing a toddler who will not open up

Sit on the floor or the bed and lay your child down with their head in your lap, facing up. From behind, you can see every tooth and both your hands are free, which is far easier than brushing a child who is standing and twisting away.

Lift the top lip with one finger so you can see where the teeth meet the gum. Brush in small circles along that line on the outside of every tooth, then the inside, then the chewing surfaces of the back teeth. Work slowly enough that no tooth is missed.

Let your child spit out what they can afterwards, and do not worry if they cannot yet, because at this amount it does not matter. If they clamp their mouth shut, sing a song that lasts as long as the brushing, or let them brush a doll's teeth first and then take their turn.

Which brushing matters most?

Both count, so brush twice a day, in the morning and at night before bed, as the Health Ministry advises. If one has to be rushed, protect the night one, because it is followed by hours with nothing to eat or drink.

Make the night brushing the last thing before sleep, after the final milk or snack. The Health Ministry also warns against giving milk or sweet drinks from a bottle at bedtime, so move the bedtime milk before the brushing rather than after it.

Who should hold the brush?

You should, for longer than you might think. A young child cannot yet reach every surface with the brush, and the more of the routine they handle alone, the more paste they tend to swallow.

Let your child have a turn first, so brushing feels like theirs, then finish it yourself. Keep supervising until you are confident they reach every tooth and use the right amount without a reminder, which is exactly what the Health Ministry's advice on fluorosis asks of parents.

Self-care skills like this arrive at different ages for different children. Our milestone tracker shows the self-care milestones to expect at each age, so you can see whether handing over more of the brushing makes sense yet.

How often should a child see the dentist?

Every six months as a routine, even when nothing hurts, according to the Health Ministry. Its clinical guideline lets the dentist adjust that for children aged six and under, to every six to twelve months for a child at low risk of decay, every six months at moderate risk and every three months at high risk.

Ask at the first visit which group your child falls into, and book the next appointment before you leave. A child who is seen regularly gets used to the chair before there is ever a problem to treat.

Fitting it into the day

The night brushing sticks best as a fixed step in the same bedtime routine every night, which our guide to bedtime by age sets out. Our after-school snack ideas help with what reaches the teeth between brushings, and the school readiness check covers the self-care skills worth practising before preschool starts.