If you've spotted a new tooth right at the back of your child's mouth and you're sure you didn't see it fall out first, you've probably just met the 6 year molars. These are a completely normal part of growing up, but they can catch parents by surprise. At Eglinton Dental Care we see a lot of local families going through this exact stage, so here's a plain-English guide to what's happening and how to help.
What are 6 year molars?
Six year molars are your child's first permanent molars. Unlike most of the teeth your child loses and regrows, these ones don't replace a baby tooth at all.
When your child is around six years old, their first permanent molars begin to erupt, and these four molars come in behind the primary teeth. That's why they can sneak up on parents. There's no wobbly tooth to warn you first, no gap to spot. One day you look in your child's mouth and there's a brand new tooth sitting right at the back.
These first permanent molars matter more than their size suggests. They help set the shape of the jaw and act as a kind of anchor for the adult teeth that come in after them. Because they're permanent, there's no second chance with this set, so looking after them from day one really counts.
What age do 6 year molars come in?
As the name suggests, most children get their six year molars somewhere around that age. In general terms, from around six years of age the baby teeth will start to fall out, and the first set of permanent molars will sit behind the primary teeth, with a second set following at around 11 to 13 years of age.
That said, every child's mouth works on its own timetable. Some children get theirs a little earlier, some a little later, and that's usually nothing to worry about. If you're ever unsure whether your child's teeth are coming along as expected, a check-up is the easiest way to put your mind at ease. You can read more about what we look for on our children's dentistry page.
Common 6 year molars symptoms
Six year molars pain and discomfort are pretty common while these teeth are working their way through the gum. It's not usually anything serious, but it can make for a grumpy week or two. Keep an eye out for:
- Sore, red or swollen gums at the very back of the mouth
- Mild discomfort or aching along the jaw
- Reluctance to chew on one side, or a preference for softer foods
- Some irritability, especially around mealtimes
- Occasionally a mild, low-grade warmth or slight fussiness
Most of this settles down on its own within a week or so as the tooth finishes coming through. A cool face washer held against the cheek, softer foods for a few days, and extra patience at the dinner table usually help. For pain relief, always follow the directions on the pack or ask your pharmacist what's suitable for your child's age.
When it's more than normal teething
While some discomfort is expected, a few signs are worth getting checked rather than waiting out. See a dentist if you notice:
- Pain that isn't easing after a week or so
- Swelling that seems to be spreading, or white pus near the tooth
- A tooth that looks like it's coming through crooked or at an odd angle
- A baby tooth still firmly in place with an adult tooth appearing behind it
If your child ever has spreading facial swelling, a fever, trouble breathing or swallowing, or bleeding that won't stop, treat that as urgent and head to a hospital emergency department rather than waiting for a regular appointment.
Why 6 year molars need extra care
Because six year molars sit so far back, they can be genuinely tricky to brush well. They're also covered in little grooves and pits on the chewing surface, which are perfect hiding spots for food and plaque. That combination is part of why first permanent molars are more prone to early decay than some of the front teeth.
A few things help protect them:
- Supervising brushing until your child can do a thorough job on their own, usually well into primary school
- Using a soft, small toothbrush that can actually reach the back teeth
- Cutting back on sugary snacks and drinks, especially sticky ones that linger on the grooves
- Keeping up with regular dental check-ups so any early decay is spotted while it's still small
Some dentists use a fissure sealant, which is a thin protective coating placed over the deep grooves of a back tooth to make it easier to keep clean. Whether this is a good fit for your child is something your dentist can talk through with you at a check-up, based on what's happening in their mouth.
Keeping on top of it with regular check-ups
The six month habit of popping in for a check-up really earns its keep during these mixed-teeth years. New teeth are arriving, baby teeth are loosening, and the bite is changing all the time. Regular visits mean our team can watch all of this unfold gradually, rather than trying to catch up after something's gone wrong.
At Eglinton Dental Care, check-ups for kids are relaxed and low-key. We explain what we're looking at, go at your child's pace, and talk through anything that needs attention before we do anything about it. You can find out more on our check-ups and cleaning page, or choose a time online that suits your family.
If your child is also losing baby teeth around this time and you're wondering what's normal, it helps to understand that whole process too, since six year molars tend to arrive alongside the first wave of baby teeth falling out.
Frequently asked questions
Do 6 year molars replace baby teeth?
No. These permanent molars don't replace any baby teeth, instead they emerge behind the last set of baby teeth. They're brand new teeth, not a replacement for an existing one.
How long does it take for 6 year molars to fully come through?
It varies from child to child, and discomfort around the gums often settles within a week or so as the tooth breaks through. The tooth itself may take longer to fully reach its final position, but the worst of the soreness is usually short-lived.
Can 6 year molars come in early or late?
Yes, quite easily. Some children get theirs closer to age five, others closer to age seven or eight, and this is usually just normal variation rather than a sign of a problem. If you're concerned, it's worth mentioning at your child's next check-up.
Do 6 year molars need fillings often?
They can be more prone to decay than other teeth simply because of their position and the deep grooves on their chewing surface. Good brushing, a lower sugar diet and regular check-ups all help reduce the chances of needing treatment later on.
Should I bring my health fund card to the appointment?
Yes, bring it along. Most private health fund rebates can be claimed on the spot through HICAPS, and you simply pay the gap. If you have any questions about what's covered, our FAQ page is a good place to start, or our team can talk you through it at your visit.
Six year molars are a normal, if sometimes uncomfortable, part of growing up, and a bit of extra care now goes a long way. If you'd like us to take a look, answer your questions, or simply get your child into good habits for these new teeth, give Eglinton Dental Care a call on 08 9564 1007 or book a check-up online. We're at 1K Imperial Entrance, Eglinton, and welcome families from Alkimos, Butler, Jindalee and right across Perth's northern suburbs.
