When Should Your Child See an Orthodontist?
Most children don't need braces until their permanent teeth come in, but the American Association of Orthodontists recommends that all children have an orthodontic evaluation by age 7. This doesn't mean every 7-year-old needs treatment—many won't need anything at all. The early evaluation lets the orthodontist spot problems early when they might be easier to fix. Some problems in young children can be prevented from getting worse, and early treatment might make later braces treatment shorter or less complicated.
At age 7, your child is in what's called the mixed dentition period. They have a mix of baby teeth and some newly coming-in permanent teeth. This is a great time to spot issues because you can see how your child's teeth are erupting and whether their jaws are growing properly. If problems are found early, your child might benefit from early treatment that guides growth in the right direction.
Understanding How Your Child's Teeth Are Coming In
Your child loses baby teeth and grows permanent teeth over several years. This process usually starts around age 6 when the first permanent molars come in. The front lower baby teeth typically fall out around ages 6-7, followed by the upper front teeth around ages 7-8. Baby molars usually come out between ages 9-12, making room for permanent premolars. This whole process continues until around age 12-13 when the last baby tooth falls out and most permanent teeth are present.
Your child's permanent teeth often look crowded or crooked when they first come in. Periods like ages 8-10 might look concerning—the newly erupted upper front teeth may seem very crowded and stick out at odd angles. This is called the "ugly duckling stage," and often things fix themselves naturally as more teeth erupt and shift into better positions. The orthodontist can tell whether your child's crowding will self-correct or whether treatment is really needed.
Your 7-Year-Old Orthodontic Checkup
During the age-7 evaluation, the orthodontist looks at several things. They examine how your child's upper and lower jaws are positioned relative to each other—whether the upper jaw is too far forward (Class II) or the lower jaw is too far forward (Class III). They check the bite—whether the upper teeth overlap the lower teeth the right amount, whether there are crossbites (where lower teeth are outside upper teeth), and whether there are any gaps or crowding. They look at whether your child is breathing through their mouth or nose and whether they have other habits like thumb-sucking that might affect tooth position.
The orthodontist will probably take X-rays to see all the permanent teeth hiding under the gums and to evaluate your child's jaw structure. X-rays show which teeth haven't erupted yet and when they're expected to come in. This information helps the orthodontist predict whether crowding will be a problem and whether early treatment might help. See our article on Teething Symptoms and Safe Relief Strategies for information about normal tooth development.
Warning Signs That Your Child Needs Early Treatment
Several things warrant early orthodontic referral. Crossbites where lower teeth stick outside upper teeth or upper teeth sit inside lower teeth can affect jaw growth and should be fixed. Severe overbite or underbite—where upper teeth stick way out or lower teeth stick way out—might need attention. An anterior open bite, where upper and lower teeth don't overlap at all in front, needs early evaluation. Severe crowding suggesting not enough room for permanent teeth or large spaces suggesting missing teeth warrant assessment.
If your child breathes mostly through their mouth, has a lopsided face, jaw clicks or pops, or loses a baby tooth too early due to decay or injury, the orthodontist should know. If your child has a tongue thrust or thumb-sucking habit continuing past age 5, early intervention might help. These things can signal that early treatment will be beneficial.
Early Treatment (Phase I) and What It Does
Early treatment, also called Phase I or interceptive treatment, typically happens ages 7-11 while baby teeth are still present. The goals are different from full braces. Early treatment aims to fix specific problems that respond best to treatment at this age, like correcting crossbites, expanding the upper jaw to prevent crowding, guiding erupting teeth into better positions, and correcting problems that might affect jaw growth.
Early treatment can prevent problems from getting worse. Fixing a crossbite early might prevent the jaw from developing a sideways shift. Expanding the upper jaw might create room for crowding permanent teeth without needing extraction later.
Guiding jaw growth with special appliances might reduce a severe underbite that could otherwise require surgery. However, early treatment doesn't always mean your child won't need full braces later. Many children who get Phase I treatment still need Phase II treatment (regular braces) once all permanent teeth erupt. Early treatment simply addresses specific problems at the best time to address them.
How Jaw Growth Affects Treatment Timing
Your child's jaws are still growing, and this growth matters for orthodontic treatment. The upper jaw usually finishes growing around age 16-17 in girls and 17-18 in boys. The lower jaw keeps growing longer, sometimes into the late teens or early twenties.
Growth happens in bursts, with the biggest growth spurt usually happening around ages 10-13 in girls and 12-15 in boys. This growth spurt is the best time for growth-modification treatments because the orthodontist can work with the body's natural growth rather than against it. For more on this topic, see our guide on Stainless Steel Crowns as Durable Restorations for.
The orthodontist can estimate how much growth your child has left by looking at X-rays of the neck bones or by checking other growth markers. This helps predict whether early treatment will be effective. Treatments that work with growth are most successful when the child still has significant growth remaining.
Space Maintenance and Keeping Room for Permanent Teeth
If your child loses a baby tooth too early—from an accident or cavity—the teeth beside it drift into the empty space. This can prevent the permanent tooth from having room to erupt. A space maintainer is a simple appliance that holds the space open until the permanent tooth comes in. Space maintainers are either fixed bands placed around teeth or removable appliances. They're not uncomfortable and help prevent crowding.
Sometimes baby molars are larger than their permanent successor teeth. This extra space, called "leeway space," naturally helps accommodate some of the crowding from permanent canines erupting. The orthodontist tracks this and can predict whether space management will be needed.
Jaw Expansion and Fixing Crossbites
If your child has a crossbite or too-narrow upper jaw, rapid palatal expansion (RPE) might be recommended. This treatment uses a special appliance with a screw that parents turn daily to gently expand the upper jaw. The screw opens the roof of the mouth slightly each day, allowing the jaw to get wider. Expansion takes a few weeks, then the appliance stays in place for a few months while bone fills in the expanded space.
Expansion feels strange but isn't painful for most kids. Some children notice a clicking sound or slight pressure. After expansion, the orthodontist keeps the appliance in for several months to let bone deposit in the new space. RPE has a high success rate and works best during childhood when the jaw bones are still growing. A nice bonus is that expanding the upper jaw often widens the nasal airway, which can help children who breathe through their mouth.
Using Growth to Fix Jaw Position
If your child's lower jaw is positioned too far back (Class II), special removable appliances called functional appliances can help. These appliances position the lower jaw forward and encourage it to grow forward as the child grows. Over time, this can reduce the underbite without surgery. Success depends on your child's remaining growth and willingness to wear the appliance. These appliances work best during the growth spurt years.
Always consult your dentist to determine the best approach for your individual situation.Conclusion
Talk to your dentist about your specific situation and what approach works best for you. If your child's lower jaw is positioned too far back (Class II), special removable appliances called functional appliances can help. These appliances position the lower jaw forward and encourage it to grow forward as the child grows. Over time, this can reduce the underbite without surgery.
> Key Takeaway: Getting your child evaluated by an orthodontist by age 7 is a smart decision even if treatment isn't needed yet. Early evaluation identifies problems that might benefit from treatment while your child's jaws are still growing. Early treatment can prevent some problems from getting worse, might reduce the need for extraction later, and can guide growth in favorable directions.