Treatment Guides
HowLongDoesaPalateExpanderStayIn?
Written by Dr. Judy Nguyen
Reviewed by Dr. Thao Vu
·October 28, 2026
How long a palate expander stays in, from the short widening phase to the longer hold, and how it fits into Phase 1 at Bloom in Long Beach and Garden Grove.
A palate expander stays in for two stretches of time: a short phase of active widening measured in weeks, then a longer hold so the new width can settle. Your child's orthodontist sets the exact timeline, because it depends on how much width is needed and how your child is growing.
At Bloom, an expander is part of Phase 1 early treatment, and Phase 1 as a whole usually runs 6 to 18 months. The expander is often one piece of that plan.
The Two Parts of Expander Time
The American Association of Orthodontists (AAO) describes expansion as a sequence: the expander goes in with an adjustment schedule, it widens the upper jaw in small steps, and once the jaw reaches the planned width it stays in place for a period to stabilize before the next stage.
| Stage | What happens | How long it takes |
|---|---|---|
| Widening | The expander gently increases the width of the upper jaw | Weeks. The AAO says some expanders are adjusted over weeks |
| Holding | The expander stays in while the new width settles | Longer than the widening phase, set by your orthodontist |
| Next step | Braces or aligners may follow to finish alignment | Depends on the full plan |
Parents are often surprised that the hold lasts longer than the turning. That stretch matters. Taking an expander out too early gives the jaw less time to settle at its new width.
What Changes the Timeline
How narrow the jaw is. A child who needs more width spends more time in the widening phase.
The type of expander. Some designs widen with a small screw on a home schedule. Others have springs or wires built in and need no turning. The AAO notes that fixed expanders stay in at all times, and removable plates come out for cleaning and eating.
Growth stage. The AAO says the right age for an expander depends on age, skeletal maturity, and sex, since girls finish growing sooner than boys. Your orthodontist plans the timing around where your child is in that process.
What comes after. If braces or aligners are planned, the expander's hold period is coordinated with the start of that next step.
What the First Weeks Feel Like
The AAO says pressure, a full feeling in the mouth, mild tenderness, temporary speech changes, and extra saliva are all normal at first and after adjustments. A 2023 systematic review of pain during rapid expansion found that discomfort is common and tends to decrease over time. Most families find the routine settles within the first stretch of treatment.
If a band feels loose or the expander rocks, the AAO's advice on orthodontic emergencies is to avoid wiggling it and let your orthodontist know right away.
How Bloom Plans It
Dr. Thao Nguyen Vu and Dr. Judy Nguyen are board-certified orthodontists who plan expander timing at our Long Beach and Garden Grove offices. The first visit is free and includes X-rays, records, and a treatment simulation, so you see the plan before you decide. We give you a written timeline for the widening phase, the hold, and the checks in between.
Learn more about how expanders fit into early treatment on our palate expander page.
Frequently Asked Questions
How long does a palate expander stay in?
Active widening takes weeks, and the expander then stays in longer so the new width can settle. Your orthodontist gives you the exact timeline.
Why does the expander stay in after we stop turning it?
The hold gives the widened jaw time to stabilize. The AAO describes this hold as a normal step before the next stage of treatment.
Is the whole Phase 1 the same length as the expander?
Not always. At Bloom, Phase 1 usually runs 6 to 18 months, and the expander may be only part of that plan.
When will my child's speech go back to normal?
The AAO says speech changes are temporary and improve as the tongue adjusts and your child practices speaking.
Sources
- American Association of Orthodontists, What are Palatal Expanders and What Do They Correct?
- American Association of Orthodontists, What Is an Orthodontic Emergency?
- Barone M, De Stefani A, Cavallari F, et al. Pain during Rapid Maxillary Expansion: A Systematic Review. Children (Basel). 2023.
- Bloom details: Palate expander, Early interceptive treatment
Want a timeline for your child? Book a free consultation at our Long Beach or Garden Grove office.
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