Yes, baby teeth matter, and often more than parents expect. They’re temporary, but while they’re here they do the heavy lifting: helping your child chew real meals, shaping the first words they sound out, and quietly saving a spot in the jaw for each adult tooth to follow. A few of them stay until age 12 or 13. So when a cavity turns up in a baby tooth, it isn’t a small thing you can wait out. Decay can bring pain, infection, and even harm the grown-up tooth taking shape underneath.
If that last part is news to you, you’re in good company. It catches most parents off guard.
The work a baby tooth does before it goes
It’s tempting to picture a baby tooth as a rough draft, something temporary that’ll soon be replaced by the real thing. But for years, that draft is doing a full-time job.
Chewing is the obvious one. A child with sore or missing teeth eats less, and eats more carefully, at exactly the age when a growing body needs a wide and easy diet. Speech is the quieter one. Teeth give the tongue and lips something to push against, and the front teeth especially help a toddler turn babble into words.
And out of sight, each little tooth is holding a place in line. Think of them as bookmarks in the jaw: every baby tooth keeps a space open and steers the adult tooth beneath it toward the right spot. Pull a bookmark out too soon and the pages close in. Neighbouring teeth drift over, the gap narrows, and the adult tooth loses the room it was counting on.
“They’re just going to fall out anyway”
This is the thought that talks many parents out of treating a cavity, and it’s an understandable one. The tooth is leaving anyway, so why bother?
Here’s the catch: a cavity doesn’t know the tooth is temporary. It keeps going. What begins as a chalky white spot can grow into an abscess, and an infection that deep can reach the adult tooth waiting below. And it’s the child who feels it in the meantime, through a toothache at 2 a.m., meals that sting, and mornings too sore for daycare. Across Canada, treating early childhood cavities is one of the leading reasons young children end up needing dental surgery, and nearly every case could have been prevented.
The tooth is short-term. The fallout isn’t.
When a baby tooth leaves too early
Sometimes decay wins, and a baby tooth has to come out years ahead of schedule. That empty space rarely stays empty for long. As the neighbouring teeth lean in, the room set aside for the adult tooth shrinks, and crowding can begin before the permanent tooth has even arrived. It’s one of the quiet, early reasons a child may later need children’s orthodontics. Caring for baby teeth today can make that road shorter tomorrow, and sometimes skip it altogether.
Keeping those little teeth healthy
Happily, protecting baby teeth doesn’t take much, as long as it’s steady:
- Brush twice a day with fluoride toothpaste: a smear the size of a rice grain before age 3, and a pea-sized dab after.
- Lose the bedtime bottle of milk or juice, which leaves teeth soaking in sugar all night.
- Reach for water, not juice, between meals.
- Start dental visits early. The Canadian Dental Association suggests a first checkup by age one, or within six months of the first tooth.
From there, routine preventive dentistry (a cleaning, a little fluoride, a sealant where it helps) keeps small troubles from turning into big ones. Not sure when to start? Here’s what to expect at a baby’s first dental visit.
A couple of questions parents often ask
Do cavities in baby teeth really need filling? Usually, yes, especially if the cavity hurts or is heading that way. Treating it protects both your child and the adult tooth forming underneath. Even so, not every spot needs drilling, and a dentist who works with kids will gladly walk you through the times when watching and waiting is the kinder path.
When do baby teeth start falling out? Most children lose their first tooth around age six, often a bottom front one. There are 20 baby teeth in all, and the molars at the back can hang on until roughly age 12 or 13.
Give your child’s smile a strong start
Healthy baby teeth make childhood easier and give the grown-up smile a better beginning. At Superkids Pediatric Dentistry and Orthodontics in Toronto, our board-certified pediatric dentists look after little teeth from the very first one, right here in The Junction. Book an appointment online or call 416-792-1155. We’d be glad to welcome your little one.