Palatal Expanders in Las Vegas & Henderson
One of the few orthodontic treatments with a hard deadline. We offer both the classic fixed expander and the removable Invisalign Palatal Expander.
The upper jaw is two bones, not one
The roof of your mouth is formed by two halves joined down the middle at the midpalatal suture. In children that join is still cartilage and connective tissue — not yet fused bone.
A palatal expander applies gentle outward pressure across that join, separating the two halves by a fraction of a millimetre at a time. New bone then fills the gap. The jaw is genuinely made wider, permanently, without surgery.
That suture fuses somewhere in the mid-teens, and once it has, this stops being possible. Widening a fused adult palate requires surgically assisted expansion — a different procedure entirely, with a different recovery.
So expansion is one of the clearest examples of why an orthodontic evaluation by age seven exists. Not because seven-year-olds need braces, but because a handful of things are straightforward at eight and surgical at twenty-eight.
Fixed expander or Invisalign Palatal Expander?
We offer both, which not every practice does. They achieve the same thing by different means, and the right one depends on your child.
Classic fixed expander (RPE)
A custom metal appliance cemented to the upper back teeth with a small screw at the centre. You turn the screw at home on a schedule we set — typically once or twice a day during the active phase.
- Cemented in place, so nothing to remember
- Works regardless of cooperation
- Longest track record of any expansion appliance
- Handles the most significant expansion
The trade-off is that it is fixed, food catches around it, and it takes a week or two to adapt to speaking and eating.
Invisalign Palatal Expander
A removable, 3D-printed clear expander worn most of the day and changed on a schedule rather than turned. No metal, no cement, no screw to remember.
- Removable for eating and brushing
- Considerably easier to keep clean
- Far less noticeable
- No daily turning for parents to manage
The trade-off is compliance — it only works if it is genuinely worn. And not every case is a candidate.
How we decide. Dr. Beth assesses how much expansion your child needs, where the suture is developmentally, and realistically how well they will cope with each. A child who will not tolerate a fixed appliance and a child who will not wear a removable one need different answers, and we would rather ask than assume.
What expansion is actually for
Posterior crossbite
The most common reason. Where the upper arch is too narrow to fit over the lower, back teeth bite inside — and children often shift the jaw sideways to compensate, which risks asymmetric growth. Crossbite →
Severe crowding
Widening the arch creates genuine room for permanent teeth still to come, and in some cases removes the need for extractions later. Crowding →
Underbite correction
Combined with a reverse-pull face mask, expansion helps bring the upper jaw forward. This is the single best window for correcting a skeletal underbite without surgery. Underbite →
Impacted canines
Where there is no room for a canine to erupt, creating arch width sometimes allows it to find its own way in without exposure surgery. Impacted teeth →
Narrow smile
A narrow upper arch produces dark corridors at the sides of the smile. Expansion broadens the arch and fills them.
Mouth breathing
Some evidence links a narrow palate with nasal airway restriction. Expansion may help, though we would not oversell it — if breathing is the concern, an ENT opinion belongs alongside.
The expansion process, start to finish
Evaluation and 3D scan
The iCAT scan shows arch width, where the permanent teeth are, and how developed the suture is. All three determine whether expansion is right and which appliance suits.
Fitting
For a fixed expander, bands are placed on the upper molars and the appliance cemented in one appointment. For the Invisalign expander, we scan and the appliance is fabricated to fit. Neither involves anaesthetic.
The active phase — a few weeks
Turning the screw, or changing appliances, on the schedule we give you. This is the part parents worry about and it is genuinely straightforward once shown. A visible gap often opens between the upper front teeth during this phase, which is entirely normal and closes on its own.
The retention phase — several months
The appliance stays in place, inactive, while new bone fills the space that was created. This part is not optional. Remove it early and the expansion relapses, undoing the work.
Removal and review
The appliance comes out and we reassess. For some children that is the whole of treatment. Others go on to braces later once the permanent teeth are in.
The first two weeks, honestly
Turning the screw. We show you in person and send you home able to do it. A small key goes into the screw and turns in one direction until the next hole appears. It takes seconds. Do it at the same time each day — bedtime works well — and mark a calendar so nobody loses track.
What your child will feel. Pressure across the roof of the mouth and sometimes behind the nose for a few minutes after each turn. Most describe it as odd rather than painful. Some feel it as a tingle around the bridge of the nose, which is expected.
Speech and eating. Both feel strange for about a week. Lisping is normal at first and resolves. Reading aloud for ten minutes a day speeds it up noticeably. Soft foods for the first few days help.
The gap. A space commonly opens between the upper front teeth during expansion. Parents often panic about this. It is proof the appliance is working, and it closes on its own within weeks.
Cleaning. Food catches under a fixed expander. A water flosser is genuinely worth it here, and rinsing after meals should become routine.
Palatal expander FAQ
Does a palatal expander hurt?
Children generally report pressure rather than pain — across the roof of the mouth and sometimes behind the nose for a few minutes after each turn. Speech and eating feel odd for about a week and then normalise. Most children adapt considerably faster than their parents expect.
What age can a child have a palatal expander?
Typically between seven and twelve, while the midpalatal suture is still unfused. The suture closes somewhere in the mid-teens and after that conventional expansion no longer works — widening a fused palate requires surgically assisted expansion. This age window is a genuine deadline rather than a preference.
How long does my child wear an expander?
The active turning phase is usually a few weeks. The appliance then stays in place, inactive, for several months while new bone fills the space created. That retention phase is not optional — removing it early allows the expansion to relapse.
Why has a gap appeared between my child's front teeth?
Because the appliance is working. As the two halves of the upper jaw separate, a space commonly opens between the upper central incisors. It is expected, it is a good sign, and it closes on its own within weeks as the fibres between the teeth pull them back together.
What is the Invisalign Palatal Expander?
A removable, 3D-printed clear expander worn most of the day and changed on a schedule rather than turned with a key. It avoids metal, cement and daily turning, and is far easier to clean. It relies on being genuinely worn, and not every case is a candidate — Dr. Beth assesses that from the 3D scan.
Can adults have a palatal expander?
Not a conventional one. Once the midpalatal suture has fused, an ordinary expander cannot separate it. Adults needing genuine arch widening require surgically assisted rapid palatal expansion, which involves an oral surgeon. Single teeth in crossbite can still be corrected with braces or aligners at any age.
Will my child still need braces afterwards?
Often, yes. Expansion creates room and corrects the width relationship; it does not straighten individual teeth. Many children complete expansion, are monitored for a few years, then have a shorter course of braces once the permanent teeth are in. Some need nothing further.
What if the expander comes loose?
Call us. A band that has come loose needs re-cementing promptly — a loose appliance is not applying force correctly and food can become trapped underneath, which risks decay. Do not wait for the next scheduled visit.
This is one where the window genuinely closes.
A free evaluation with Dr. Beth and a 3D scan will tell you whether expansion is warranted, which appliance suits your child, and whether now is the moment — or whether to wait and watch.