What Does a Palate Expander Do — And Why We Use Them Conservatively

At Aronson Orthodontics, we sometimes recommend a palatal expander as part of early orthodontic treatment — but only when it’s truly necessary. Our Southbury orthodontic office and Waterbury orthodontic office both believe in conservative, evidence-based care. That means no unnecessary appliances, no gimmicks, and no aggressive treatment timelines.

What a Palatal Expander Actually Does

A palatal expander gently widens the upper jaw (the maxilla) to create more space for teeth and improve how the upper and lower jaws fit together. In children, the two halves of the palate haven’t yet fused, so this gentle widening is biologically possible — and highly effective when done at the right age.

By widening the upper jaw, we can:

  • Correct crossbites (when the top teeth bite inside the bottom teeth)
  • Create room for crowded permanent teeth
  • Improve airway space and nasal breathing
  • Set up a more balanced bite before braces or aligners

Learn more about early orthodontic treatment and how timing can make all the difference.

Why We’re Conservative About Using Expanders

Not every child with crowding or a narrow smile needs an expander. At Aronson Orthodontics, we carefully evaluate growth patterns, skeletal maturity, and bite function before recommending any appliance.

Dr. Aronson is board-certified — the only board-certified orthodontist in the Middlebury area — and approaches every case individually. We believe in doing the right thing at the right time, not rushing to place expanders just because a child is young.

If expansion isn’t indicated, we monitor growth and re-evaluate when the timing is ideal. Our goal is always to guide growth — not to over-treat.

How Long Does Expansion Take?

Most expanders are active for about 2–3 weeks of turning (a few minutes per day) and stay in place for several months afterward to allow the bone to stabilize. During this time, your child can continue normal activities — brushing, eating, and playing — with just minor adjustments.

We’ll show you exactly how to turn the expander at home and keep things clean and comfortable. See our step-by-step guide to expanders for detailed instructions.

What Happens After Expansion?

Once expansion is complete, we let the bone settle. After stabilization, many patients move on to phase II orthodontic treatment — typically with braces or Invisalign® clear aligners. Others simply return for routine growth check-ups until more permanent teeth erupt.

Early Evaluation Is Key

An expander works best before the upper jaw bones fuse — usually between ages 7 and 10. That’s why the American Association of Orthodontists recommends a first orthodontic check-up by age seven.

We offer free consultations — both in-office and through our virtual consultation option — so parents can understand if an expander might be appropriate.

Local Families Trust Us for Conservative, Personalized Care

Families from Southbury, Middlebury, Woodbury, Oxford, Newtown, and Naugatuck choose Aronson Orthodontics because they know every decision is made with care and integrity. Dr. Aronson treats every child like his own — with attention, patience, and honesty.

We’re a family-owned, privately run practice — not part of a corporate chain — so you’ll always see the same orthodontist, and your child’s treatment will never be “passed off” to an associate.

Schedule a Consultation

If you’ve been told your child “needs an expander,” come see us for a second opinion. We’ll give you a clear, honest assessment and explain every option.

? Schedule your free consultation today at our Southbury orthodontic office or Waterbury orthodontic office.

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