Phase 1 Orthodontic Treatment: A Parent's Guide
What Phase 1 Orthodontics Is and What It Isn't
Phase 1 is early treatment. It typically begins between ages 7 and 10, while a child still has a mix of baby teeth and incoming permanent teeth. The goal is narrow and specific: address one or two developmental issues that are easier or only possible to correct during active jaw growth. This is not a full orthodontic correction. Most children who complete Phase 1 will still need Phase 2 treatment (comprehensive braces or aligners) once all their permanent teeth have come in, typically around age 11 or 12.
What Phase 1 is not:
- It's not jumping the gun on braces because a parent is eager
- It's not something every child needs — most don't
- It's not a guarantee that Phase 2 will be avoided entirely
If a provider recommends Phase 1 without clearly explaining what specific problem they're addressing and why now is the right time, that's worth questioning. At Bettagere Orthodontics, we're direct with parents about which children genuinely benefit from early treatment and which are better served by monitoring and waiting.
What Problems Phase 1 Addresses
Not every alignment issue qualifies for Phase 1 treatment. The problems that respond best to early intervention are those directly tied to jaw growth — because once the jaw finishes developing, certain corrections become significantly more difficult and sometimes require surgery in adulthood. Common Phase 1 indications include:
Crossbite. When upper teeth bite inside lower teeth — either in the front or on the sides — a crossbite can cause jaw shifting, uneven wear, and asymmetric jaw growth if left uncorrected during development. A palatal expander used during Phase 1 can correct a crossbite in a child at age 8 that would require surgery at age 25.
Severe crowding. If there's clearly not enough space for permanent teeth to erupt correctly, early intervention can create room, sometimes avoiding extractions later.
Underbite. When the lower jaw protrudes ahead of the upper, early treatment using growth modification appliances can guide development in a more favorable direction while growth is still occurring.
Narrow upper jaw. A palate expander used before the palatal suture fuses (typically in the early teen years) can widen the upper arch predictably and comfortably.
Harmful habits. Prolonged thumb sucking or tongue thrusting that's actively affecting jaw development can sometimes be addressed with a habit appliance during Phase 1.
What Phase 1 Treatment Looks Like
Phase 1 typically runs 9 to 12 months shorter than most parents expect. The appliances used depend entirely on what's being corrected:
- Palatal expander a fixed appliance that gently widens the upper jaw over several months
- Partial brace brackets on select teeth to address specific positioning issues
- Growth modification appliances devices that guide jaw growth direction, such as a Herbst appliance or reverse-pull headgear for underbites
- Habit appliances fixed or removable devices that discourage thumb sucking or tongue thrusting
After Phase 1 ends, there's typically a resting period sometimes a year or more during which we monitor the eruption of permanent teeth before recommending Phase 2.
How Much Does Phase 1 Treatment Cost?
Phase 1 is priced separately from Phase 2. Most practices including ours apply a credit from Phase 1 toward the cost of Phase 2 when the time comes, so families aren't paying full price twice. The exact cost depends on which appliances are needed and how long the treatment runs. We provide a full written quote at your consultation with no obligation.
Dental insurance plans that include an orthodontic benefit typically cover Phase 1 the same way they cover comprehensive treatment up to the lifetime maximum. See our financial information page for more details on payment options.
How to Know If Your Child Needs Phase 1
The honest answer is: you need an evaluation to know for certain. The AAO recommends that every child be seen by an orthodontist by age 7, specifically so that issues like the ones Phase 1 addresses can be identified at the optimal window. Many children who come in for an early evaluation don't need Phase 1 they're simply monitored over time. A smaller number have one of the specific issues that genuinely benefit from early intervention.
Signs that may indicate Phase 1 is worth discussing include:
- A jaw that visibly shifts to one side when your child bites down
- Upper front teeth that protrude significantly
- Lower teeth that seem to come in front of upper teeth
- Difficulty chewing or biting
- Crowded front teeth well before all permanent teeth have erupted
- A narrow, high-arched palate
None of these automatically means Phase 1 is needed — but they're worth having evaluated sooner rather than later.
