Parents are often told to book an orthodontic check around age 7 and then wonder why, when their child still has a mouth full of baby teeth and nothing looks obviously wrong. The answer is timing. At about seven the bite is set by the first adult molars, the jaws are still growing, and a few specific problems can be spotted while they are still easy to influence. Many children who are checked at this age need no treatment at all.
Seven is when the first adult molars have settled in
The first permanent molars usually come through behind the baby teeth at around six. Once they meet, they show how the upper and lower jaws relate to each other from front to back and side to side. The upper and lower front adult teeth are usually arriving at the same time. That combination of new molars, new incisors and remaining baby teeth gives a clear early picture of how much space there is and how the bite is forming.
Orthodontic organisations such as the American Association of Orthodontists recommend a first orthodontic look by age 7 for this reason. It is a guide rather than a deadline. A child who is eight or nine and has never been checked has not missed out; the assessment is simply done then.
The visit is mostly looking and measuring
A first check is short. The dentist looks at how the teeth meet when your child bites together, which teeth have arrived and which are still to come, how the jaw moves when opening and closing, and whether any habits are affecting the bite. Depending on what is seen, an X-ray may be suggested to show the adult teeth still developing under the gums, so missing or extra teeth, or teeth heading the wrong way, can be noted early.
Nothing is drilled or fitted on the day. Most families leave with a note to review again in twelve months or so, often alongside routine check-ups.
At Lumi Dental this kind of growth and bite review is done by our general dentists, and our oral health therapists see children for check-ups and prevention. Eligible children may be bulk billed for check-ups and X-rays under the Child Dental Benefits Schedule, although the schedule does not cover orthodontic treatment. Where a child needs a more involved orthodontic plan, we discuss referral to a registered orthodontist.
Findings that are worth acting on early
Most bite differences at seven are watched rather than treated, because many sort themselves out as the jaws grow and baby teeth are replaced. A smaller group of findings is different, because waiting can let them become harder to correct.
Crossbites. When some upper teeth bite inside the lower teeth, the lower jaw can slide to one side to close. Over time that shift may influence how the jaw grows, so correction is often considered while a child is young.
A narrow upper jaw. This often goes with a crossbite or crowding. In children the upper jaw can usually be widened with an expander because the sutures in the palate are still responsive. That responsiveness varies a great deal from person to person and reduces through the teens, which is one reason the timing of assessment matters. Our article on the palatal expander explains how these appliances work, and older teenagers and adults may be assessed for MARPE or surgically assisted expansion instead.
Prominent upper front teeth. Front teeth that sit well forward are more likely to be chipped or knocked in a fall. A Cochrane review (Batista and colleagues, 2018) found that early treatment for prominent upper incisors reduced the chance of incisor injury compared with waiting, although it did not clearly change the final result of orthodontic treatment.
Early tooth loss and space. If a baby molar is lost early to decay or injury, the neighbouring teeth can drift into the gap. A space maintainer may be suggested to hold room for the adult tooth.
Habits. Persistent thumb or finger sucking past the age when adult front teeth arrive can open the bite or push the front teeth forward. Our guide to thumb sucking and the teeth covers ways to help a child stop.
An early check is not a booking for braces
Early, or interceptive, treatment has narrow aims: correct a crossbite, widen a narrow upper jaw, hold space or reduce the risk of injury to prominent teeth. It often lasts months rather than years. Many children who have it still need braces or aligners later.
For many children, the right plan at seven is to do nothing yet and review as more adult teeth arrive. Full treatment, if it is needed at all, is more often started around eleven to thirteen, when most adult teeth are through. Our guide on ways to straighten crooked teeth describes the options at that stage.
What parents ask before the first check
My child has had regular dental visits. Is a separate orthodontic check needed?
Not always. A dentist who sees your child regularly will usually look at the bite and jaw growth as part of the check-up. Ask specifically about the bite around age seven so it is recorded and followed over time.
Is it too early if most of the teeth are still baby teeth?
No. The mix of baby and adult teeth is what makes this age useful. It shows how the bite is developing while there is still growth to work with.
What happens if nothing is found?
Your child carries on with normal check-ups, and the bite is reviewed as more adult teeth come through. If this is your child's first time at a dental practice, our guide to a child's first dental visit explains what to expect.
If your child is around seven, or you have noticed a crossbite, crowding or front teeth that stick out, our team at Lumi Dental in Melrose Park can take a look and explain whether anything needs to happen now. Book through our general dentistry page or check our current deals.
This article is general information and not a substitute for personal advice from a dentist or orthodontist.
