When most parents think about braces, they picture a teenager. A mouth full of adult teeth, brackets in place, treatment plan mapped out for eighteen to twenty-four months. That’s the image orthodontic care usually brings to mind, and for many kids, that’s exactly what treatment will look like.
But for some children, waiting until the teenage years means missing the window when treatment is most effective. That’s where Phase 1 orthodontics comes in.
Phase 1 orthodontic treatment, sometimes called early orthodontic treatment or interceptive orthodontics, is done while a child still has a mix of baby teeth and permanent teeth, typically between the ages of seven and ten. Its purpose isn’t to straighten every tooth. Its purpose is to guide how the mouth is developing, so that problems can be prevented, minimized, or corrected while the jaws are still growing.
Not every child needs Phase 1 treatment. But for the children who do, it can make a significant difference in what treatment looks like later, and in some cases, whether more invasive intervention becomes necessary at all.
Why Age Seven?
The American Association of Orthodontists recommends that every child receive an orthodontic evaluation by age seven. This isn’t because most seven-year-olds need braces. It’s because age seven is when we can first see how permanent teeth are coming in, how the jaws are relating to each other, and whether early orthodontic issues are beginning to develop.
By age seven, the first permanent molars have usually erupted and several front teeth have come in. That’s enough information for an orthodontist to evaluate the bite, assess jaw development, and identify anything that’s likely to become a bigger problem if left alone.
For most children, this early orthodontic evaluation is reassurance. Everything is developing normally, no treatment is needed yet, and we’ll simply monitor growth over the coming years. For a smaller group of children, the evaluation identifies something worth addressing now, while the jaws are still shaping and the mouth is at its most responsive to guided change.
That responsiveness is what makes Phase 1 possible. Once a child’s jaw growth is complete, options become more limited. Tooth extraction, jaw surgery, or longer, more complex treatment plans in the teenage years can sometimes be avoided entirely with the right intervention at the right age.
What Phase 1 Orthodontic Treatment Actually Does
Phase 1 treatment is not a first round of braces in the traditional sense. It’s a targeted intervention focused on jaw growth, arch development, and correcting specific orthodontic problems that benefit from early attention.
Depending on the child, Phase 1 orthodontic care might involve:
Guiding jaw growth. The upper jaw and lower jaw grow at different rates and can develop out of proportion with each other. Phase 1 treatment can guide the growth of the upper jaw or influence how the lower jaw positions itself, creating a better foundation for the permanent teeth to come in.
Expanding a narrow palate. A narrow upper jaw can cause crossbites, crowd the incoming permanent teeth, and even affect airway function. Palatal expansion during Phase 1 uses the child’s active jaw growth to create additional width in the upper arch. This is one of the most common and effective Phase 1 treatments.
Creating space for permanent teeth. When adult teeth are coming in and there’s not enough room for them, they can erupt in the wrong position or fail to erupt at all. Phase 1 treatment can preserve or create space, allowing the remaining permanent teeth to come in more predictably.
Correcting protruding teeth. A protruding tooth is more vulnerable to injury during play, sports, or falls. Phase 1 treatment can move front teeth back into a safer position, reducing the risk of trauma during the years when kids are most active.
Addressing habits that affect development. Thumb sucking, prolonged pacifier use, and tongue thrusting can shape the palate and affect tooth alignment. Phase 1 appliances can gently discourage these habits and support proper oral posture during a critical growth period.
Phase 1 treatment typically uses partial braces, a palatal expander, or other targeted orthodontic appliances rather than a full set of braces or aligners. Treatment usually lasts nine to eighteen months, followed by a resting period while the remaining permanent teeth come in.
When Phase 1 Treatment Is Necessary
Some orthodontic problems benefit clearly from early treatment. Others don’t. Knowing the difference is what separates thoughtful Phase 1 care from unnecessary intervention.
Signs that Phase 1 orthodontic treatment may be necessary include:
- A crossbite, where upper and lower teeth don’t fit together correctly
- A narrow upper jaw that causes crowding or affects breathing
- A significant overbite or underbite that will worsen with growth
- Severe crowding that will prevent permanent teeth from erupting properly
- Protruding front teeth at higher risk of trauma
- Missing or extra teeth affecting normal development
- Jaw imbalances that would become harder to correct after growth is complete
- Habits like thumb sucking that are actively shaping tooth or jaw position
- Signs of airway concerns related to jaw development
For children with these issues, early orthodontic intervention can prevent problems from becoming more severe. In some cases, Phase 1 treatment eliminates the need for tooth extraction or jaw surgery later, because the jaws were guided to a healthier position before growth was complete.
For children without these issues, waiting until all the permanent teeth are in and starting one round of comprehensive treatment in the teen years is typically the better path. We don’t recommend Phase 1 treatment just because a child has some baby teeth still in place or because a few permanent teeth are coming in crooked. Those things often resolve on their own as growth progresses.
What Happens After Phase 1
Phase 1 treatment isn’t usually the end of a child’s orthodontic journey. Most children who complete Phase 1 will still need a second round of treatment, called Phase 2 orthodontics, in their early teens. Phase 2 is what most people picture as traditional braces or clear aligners: full alignment of all the permanent teeth once they’ve come in.
The advantage of two phase treatment is that Phase 2 is often shorter, simpler, and produces more stable results because the jaws were guided during a period of active growth. Problems that would have required extractions, surgery, or extended treatment can be reduced or avoided entirely.
Between Phase 1 and Phase 2, there’s typically a resting period lasting one to three years. During this time, we monitor growth and eruption, allowing the remaining permanent teeth to come in naturally. Regular checkups help us time Phase 2 optimally, so that active treatment starts when it will be most effective.
The Santucci Approach to Early Orthodontic Care
Phase 1 treatment is only valuable when it’s genuinely needed. At Santucci Orthodontics, our approach to early orthodontic care is intentionally conservative. We recommend Phase 1 treatment only when it will make a meaningful difference in a child’s long-term outcome, not simply because a child is old enough to start.
For many families, the first orthodontic evaluation is an opportunity for reassurance rather than a treatment recommendation. When something does warrant early intervention, we explain exactly what we’re seeing, why we’re recommending treatment now, and what the alternative would look like if we waited. Parents deserve real information, not a sales pitch.
Our focus on jaw development, airway function, and non-extraction orthodontics all connects here. Phase 1 treatment is often where those philosophies get applied first, because it’s the age when guided growth is possible. Learn more about our approach to kids orthodontics, our thinking on airway health and why crowded teeth are often a symptom, not the primary problem.
Scheduling an Evaluation
If your child is approaching age seven or if a pediatric dentist has recommended an orthodontic evaluation, we’re happy to help. An initial evaluation is complimentary, and in the majority of cases, we’ll simply confirm that everything is developing well and set a plan to monitor growth over the coming years.
For the smaller group of children who do benefit from Phase 1 orthodontics, catching the issue early is one of the most valuable things a parent can do. What sets us apart is the willingness to look at the full picture of how a child is developing, not just what their teeth look like today.
Schedule a consultation at our East or West Wichita location to learn whether Phase 1 treatment is right for your child.
