6 Kids’ Dental Myths That Are Quietly Hurting Your Child’s Teeth

School holidays are here, and if you’ve been meaning to get the kids in for a check-up, now is genuinely one of the best times to do it. But before you book an appointment, I want to address something I see every single week in the chair at The Grove Dental Rouse Hill: well-meaning parents making decisions based on dental myths they’ve held for years. Some of these beliefs are surprisingly widespread across the Hills District. And a few of them are quietly doing real damage to kids’ teeth.

Let me walk you through the six I hear most often — and what the evidence and my clinical experience actually say.

Myth 1: Baby Teeth Don’t Really Matter

My child will lose them anyway, so why does it matter if they get a filling?

This is probably the most common thing I hear from parents, and I completely understand why it feels logical. Baby teeth are temporary, so surely a cavity in a tooth that’s going to fall out isn’t a big deal? In my experience, this belief leads to more unnecessary pain and more complex treatment than almost anything else I see in young patients.

Baby teeth are not just placeholders. They guide the jaw’s development, hold space for the adult teeth coming through, and allow children to chew properly and speak clearly. When a baby tooth is lost too early due to decay or infection, the neighbouring teeth shift into that space. The permanent tooth then has nowhere to come through correctly, and orthodontic treatment often follows.

Beyond the structural role, untreated decay in baby teeth can become infected and genuinely painful. Children should not have to manage that pain, and it often affects sleep, concentration at school, and eating. Our children’s dentistry team looks at baby teeth as the foundation for everything that comes later — because that’s exactly what they are.

Myth 2: You Only Need to See the Dentist When Something Hurts

If my child isn’t complaining about tooth pain, do we still need a check-up?

This one worries me the most, because by the time a child tells you their tooth hurts, the problem has usually been developing quietly for months. Decay in children progresses quickly. Early-stage cavities have no symptoms at all. A child who says nothing is wrong might still have active decay that, caught at a six-month check-up, could be treated with a simple filling rather than something far more involved.

I always tell parents: the check-up is not just for finding problems. It’s for preventing them. We check the bite, the eruption pattern of adult teeth, gum health, and how they’re brushing. We also talk to kids directly about their habits in a way that sticks — because when it comes from someone other than mum or dad, it often lands differently.

The Australian Dental Association recommends children visit the dentist every six months. School holidays are one of the easiest times to make that happen without disrupting the school week.

Myth 3: Sugar Causes Decay Directly

So if my child doesn’t eat lollies, their teeth are fine?

Not quite. Sugar itself does not cause tooth decay — it’s the acid produced by the bacteria in your child’s mouth when they eat sugar that causes the damage. And here’s the important bit: it’s not how much sugar your child eats, it’s how often and for how long those teeth are exposed to it.

A child who drinks one glass of juice quickly at lunch is at far lower risk than a child who sips on a juice bottle all afternoon. Grazing on crackers, dried fruit, muesli bars, and bread — foods that aren’t traditionally labelled as sweet but break down into sugars and stick to teeth — can be just as problematic as lollies eaten in one sitting.

What I recommend to parents: limit sugary or starchy snacks to mealtimes where possible, make water the go-to drink between meals, and get kids brushing within 30 minutes of the last meal of the day. That consistent routine does far more than cutting sugar entirely.

Myth 4: Anxious Children Just Need to Toughen Up

My child is terrified of the dentist. Is that something they’ll grow out of?

Some children will settle with time and positive experiences. But dental anxiety in children is real, it’s valid, and pushing through it without addressing it properly can embed that fear for decades. I have adults in my chair right now who trace their dental anxiety directly back to a rough experience at age seven or eight.

At The Grove Dental, we take a genuinely unhurried approach with nervous children. We go at their pace. We explain every step before we do it. We use distraction techniques, let them hold the suction tool if they want to feel in control, and never shame them for feeling scared. For some children, the first appointment is just a look around and a chat — and that’s completely fine. Building trust takes time, and it’s worth it.

If your child has had a difficult experience elsewhere or is telling you they’re scared, please don’t brush it off. Mention it when you book their appointment so our team can prepare accordingly.

Myth 5: Teeth Straightening Is Just Cosmetic and Can Wait Until They’re Older

Does my child really need orthodontic treatment at age 7 or 8?

Not always, but sometimes yes — and the window matters. Early-intervention orthodontics is not about aesthetics. It’s about guiding jaw and bite development at the age when it’s still possible to influence the underlying bone structure, typically between ages 7 and 10. Once a child reaches their mid-teens, that window has largely closed, and more complex (and costly) treatment is often required to achieve the same outcome.

Common issues we look for at this age include crossbites, underbites, crowding, and thumb-sucking habits that are affecting jaw shape. Not every child needs early treatment, but every child benefits from an assessment at the right time. If we spot something that warrants monitoring or early action, we’ll tell you clearly and explain why. Nothing is done without a full conversation with parents first.

Myth 6: You Don’t Need to Floss Kids’ Teeth Until They’re Teenagers

When should children actually start flossing?

As soon as any two teeth are touching, flossing should begin. For most children, that’s around age two to three for the back teeth. At that stage, parents are doing the flossing. As children develop fine motor control — usually around age 8 to 10 — they can start learning to do it themselves, with supervision.

The space between teeth where they contact is exactly where toothbrushes cannot reach. That’s where decay most commonly develops in children who aren’t flossing. It’s also one of the harder areas to see and treat, because by the time it shows up on an x-ray, the cavity is already well established. A minute of flossing each night is a genuinely simple investment against something that takes significantly more time and cost to fix.

This content is general information only and is not a substitute for personalised dental advice. Results and treatment outcomes vary by individual. Please consult a qualified, AHPRA-registered dentist for advice specific to your situation. For more information visit thegrovedental.com.au.