Toddlers, ages 3 to 5
Yes, they fight you at bedtime. That’s the age.
All twenty baby teeth are in and your child has opinions about every one of them. Most first cavities show up somewhere in these three years. So does the impression of the dentist your child will carry for a very long time.
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All 20 teethUsually complete by about age three
Pediatric specialistsTrained for how children this age behave
Open SaturdaysAppointments outside preschool hours
Why these three years carry so much
Teeth are half of it. Trust is the rest.
Between ages three and five your child has the full set of twenty baby teeth, and this is when decay most commonly turns up for the first time. It is also when children settle on what they think the dentist is. Appointments at this stage are built around behaviour and trust as much as around teeth, and most children are seen every six months.
The dental half is straightforward. All twenty teeth are in and touching each other now, which means there are surfaces no toothbrush reaches and places decay can start out of sight. Snacking patterns are set by this point, and so is whether brushing happens twice a day or most days.
The other half matters more. At three years old, a dental visit should be more than just checking teeth. Imagine your child walking into a bright, colourful, open space filled with opportunities to play, explore, and learn. From our activity and arcade room to our interactive toothbrushing station, we create an environment where children feel comfortable, curious, and excited to participate.
We want every visit to feel more like a fun playdate than a dental appointment. When children associate the dentist with positive experiences, they build confidence, develop trust, and look forward to coming back.
At this age, healthy habits are built through repetition, encouragement, and positive reinforcement. Each visit gives us another opportunity to practise brushing, reinforce good habits, and make oral health education fun and familiar.
Our goal is simple: help children love coming to the dentist while building healthy habits that last a lifetime.
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Ages 3 to 5
What starts to show up at this age
Every baby tooth is in now, which is the point at which patterns start becoming visible.
Decay between the back teeth
Once the molars touch, the surfaces between them are out of a brush’s reach. That is where cavities start at this age, and they stay hidden until they are large.
Whether flossing has started
The moment two teeth touch, a brush stops getting between them. Most families have not started, which is normal, and this is the age it begins to count.
Who finishes the brushing
A four year old does not have the hand control to brush properly, however capable they look. Let them go first, then finish it yourself. That’s the version that works.
Thumb and pacifier habits
Still going strong at four is the point it starts to change how the front teeth and the palate develop. There are ways to handle it that do not turn into a battle.
Chips and knocks
Running, climbing, falling. Most chips to a baby tooth need nothing at all, but a tooth that has been shoved out of place or gone grey should be looked at.
How the appointment goes
How your child copes tells us what to plan for next time. It is information, not a grade on either of you, and a check-up is a far better place to learn it than a filling.
The one parents ask most
My child fights me every night. What do I do?
First: this is normal, and it’s not a sign you’re getting it wrong. Three and four year olds push back against things done to them, and having a brush put in your mouth is very much a thing done to you.
What works, from what we see: brush at a fixed point in the routine, so it is not up for negotiation every night. Let them take a turn first, then take yours, so they get some control and the teeth still get clean. Lay them back across your lap or on the floor instead of fighting them upright, because you can see what you are doing and it is over faster. Two minutes with a timer or a song that ends, so there is a finish line. And brush your own teeth in front of them, because at this age copying beats instruction.
What doesn’t work is a nightly argument you sometimes lose. If that’s where you’ve ended up, say so at the appointment. We hear it constantly, and a broken routine is a much easier thing to fix than the cavity it turns into eighteen months later.
At home
What to change at home
The handful that genuinely change how this goes.
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Pea-sized fluoride toothpaste, twice a day
From age three the amount goes up from a smear to a pea. Spit, do not rinse, because rinsing washes away the fluoride you just put on.
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You finish the job until about age eight
The hand control is not there yet. Let them brush first for the habit, then go over it properly yourself. You are not undermining them by doing that.
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Start flossing where teeth touch
Usually the back molars first. Floss picks are easier than string at this age and they get used more often, which counts for more than technique.
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Watch how often, not how much
Sugar four times across a day does more damage than the same amount in one sitting, because every exposure restarts the acid attack. Grazing and sipping are the problem.
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Water between meals, milk with them
Juice is the one worth being strict about. If it is in the house, it goes with a meal and in a cup, not in a sippy cup carried around all afternoon.
Questions
What parents ask at this age
My child screams at the dentist. What can you do differently?
Quite a lot. We can book them at a quieter time of day, keep the first appointment to nothing but a ride in the chair and a count of the teeth, use tell-show-do so nothing happens before they have seen it, and let them hold the mirror. If treatment is needed, nitrous oxide, oral sedation and general anesthesia are all in this building, so your child is not sent somewhere else to a stranger. Nitrous oxide and oral sedation do not mean treatment happens asleep: they are techniques for keeping the appointment comfortable while your child stays awake. General anesthesia is the one where your child is asleep. Tell us before the appointment instead of on the day, and we will build it around them.
How do I get my toddler to let me brush their teeth?
Make it a fixed part of the routine, not a decision you renegotiate every night. Let them have a turn first and then take yours. Lay them back across your lap instead of fighting them standing up. Use a timer or a song with a clear end. Brush your own teeth where they can see you. And if it has become a battle you regularly lose, raise it at the appointment, because a broken routine is a much easier problem to fix than the cavity it causes.
Is it too late to stop the pacifier or thumb sucking?
No. Most children stop on their own between two and four. If it is still frequent at around four it starts to affect how the front teeth and the palate develop, so it is worth working on. Pressure and shaming do not work and usually make it worse. Rewarding the nights they manage without, and dealing with whatever the habit is doing for them, works far better. We can help, and in a small number of cases a simple appliance is the right answer.
My child has a cavity. How did that happen, they are only four?
Usually it is how often the snacking and sipping happens, not how much sugar is in it. Sometimes it is brushing that is happening but not thoroughly, because the child is doing it alone. Sometimes it is the surfaces between the back teeth, once the molars are touching and flossing has not started. And sometimes it is none of those and the enamel simply formed differently, which is nobody’s fault. Worth knowing which, because it changes what we do next.
Do baby teeth with cavities need fixing if they fall out anyway?
Yes. Decay reaches the nerve and hurts exactly as much in a baby tooth, it keeps a child awake and off their food, and an infection can damage the permanent tooth developing above it. A baby tooth lost too early also lets the neighbouring teeth drift into the gap, so the adult tooth arrives with nowhere to go. The molars at this age are not lost until around ten to twelve, so they have a long way left to run.
How often should a toddler be seen?
Every six months for most children. Every three months if they have already had a cavity, if there is a medical reason, or if their enamel formed unusually. For children in that higher risk group the shorter interval does more good than anything else we offer, because the whole point of seeing them is catching things while they are still small.
Should my child have sealants yet?
Usually not at this age. Sealants matter most on the permanent molars that arrive around age six. Baby molars are sometimes sealed if a child is at high risk of decay and the grooves are deep, so ask about your particular child instead of assuming it either way.
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