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Palatal Expanders in San Antonio
An appliance that gently widens a narrow upper jaw while a child is still growing, so the adult teeth have somewhere to go.
What a palatal expander actually does
An expander sits against the roof of the mouth and applies gentle, steady pressure across the upper jaw. In a growing child the two halves of the upper jaw have not yet fused, so that pressure widens the arch itself rather than just tipping teeth outward.
That matters because a narrow upper jaw is the root cause behind several problems that otherwise get treated one at a time: crowding with nowhere for the adult teeth to erupt, crossbites where the upper teeth sit inside the lower ones, and impacted canines.
Timing is the whole game. Expansion is straightforward while a child is growing and becomes progressively harder once the jaw has fused, which is why an evaluation around age seven is worth doing even when the answer is "not yet".
When an expander is the right call
Crowding with nowhere to go
Widening the arch creates room for adult teeth instead of removing healthy ones to make space.
Crossbite
When upper teeth bite inside the lower teeth, expansion corrects the underlying width rather than masking it.
Impacted canines
More arch width gives a blocked canine a path to come in on its own.
Airway width
Widening the upper jaw also widens the floor of the nasal airway. We assess this, and we do not overpromise what you will notice.
What to expect
- Fitting takes one appointment and is not painful.
- Turning is a small daily adjustment you do at home with a key. We show you exactly how, and it takes seconds.
- The first few days bring pressure rather than pain, and a temporary gap can open between the front teeth. That gap closing on its own is normal and is a sign it is working.
- Speech and eating feel odd for about a week, then stop being noticeable.
- After expansion the appliance usually stays in place for several months while new bone fills in.
Expanders are one part of early orthodontic treatment, alongside space maintainers and interceptive appliances. Read more about the airway side on maxillary expansion and the airway.
Book a free growth evaluation
Exam, digital scan and X-ray at no cost. Most children need nothing more than a recall appointment, and we will tell you if that is the case.
Prefer to talk now? Call (210) 714-5525.
Common questions
At what age does a palatal expander work best?
Generally between about seven and twelve, while the upper jaw is still growing and its two halves have not fused. That is exactly why an evaluation around age seven is worth doing.
Does an expander hurt?
Most children describe pressure rather than pain, mostly in the first few days and for a few minutes after each turn. Over-the-counter pain relief handles it.
Will it leave a gap between the front teeth?
Often yes, temporarily. It means the jaw is widening as intended, and the gap usually closes on its own.
Can adults have palatal expansion?
Once the jaw has fused, conventional expansion no longer works the same way and a surgical approach may be the option. Dr. Cochran will tell you honestly which applies to you. See surgical orthodontics.
Does expansion help with breathing?
Widening the upper jaw does widen the floor of the nasal airway, and we include an airway assessment in the evaluation. Whether you notice a change depends on the individual, and we will not promise an outcome we cannot predict. See airway, TMJ and sleep appliances.
Ready to start? Your consultation is free.
Exam, digital scan and X-ray at no cost, at either San Antonio office. You will leave knowing your options and what treatment would cost.