Maxillary expansion appliances

Maxillary expansion appliances are used to widen a top jaw which is too narrow in relation to the lower jaw.

There are numerous types of maxillary expansion appliance - fixed and removable. The most common types are fixed and use an expansion screw (which is turned regularly by the patient) or a wire spring device (which is widened by the orthodontist).

Removable appilances are orthodontic plates with a built-in expansion screw which is turned regularly by the patient.




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