Orthodontic palatal expanders are dental appliances used to widen the upper jaw (maxilla) and to create more space for erupting teeth. They’re most commonly used in children as early as age 7 and teenagers while the jaw is still developing.
An orthodontist may recommend an expander for:
- Crowded teeth or insufficient space for erupting permanent teeth
- A crossbite, where some upper teeth sit inside the lower teeth
- A narrow upper dental arch
- Certain bite or jaw-development problems
- Sometimes to improve nasal/airway dimensions (although the specific effects depend on the individual)
How does the orthodontic expander work:
The upper jaw is made of two bones separated by a suture (midpalatal suture) in between. The expander widens the jaw by applying sideways pressure to the two halves. The two halves of the upper jaw can be separated gradually, allowing new bone to form between them leading to increased space for the erupting teeth. There are many variations in the design of expanders, but the most common design has bands that fit around the upper first molars anchoring the device into place with metal arms that extend forward. As the expander is activated the two halves of the upper jaw move apart and the palate widens.
What do kids experience during expansion:
During the expansion kids may experience pressure or mild soreness around the teeth/palate, a temporary change in speech, increased salivation and a gap developing between the upper front teeth. It takes kids a few days to get used to components of the appliance touching the soft tissue in their mouth. Once the expander is placed the activation phase may last anywhere from two to four weeks depending on the extent of change needed. When the expander is activated there may be a momentary tightness felt but the movement is so incremental that there should not be any experience of pain. That front-tooth gap is often expected and usually closes or is managed as orthodontic treatment continues. The importance of maintaining oral hygiene is always stressed while the expander is in place.
If you were told by your dentist that your child may benefit from an expander and you need further clarification you can call for a complimentary consultation at (708) 613-5023 or make an appointment through our website at www.oakparkortho.com.
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