What is a Rapid Palatal Expander?
A rapid palatal expander (RPE) is a custom-made device designed to widen the two halves of the upper jaw, known as the palate or maxilla. The two halves are connected by a “suture” located at the center of the roof of the mouth. The RPE is secured to the upper back teeth and gently separates the suture, allowing the jaw to expand. As the jaw widens, new bone forms between the two halves of the palate.
When is a palatal expander needed?
An expander offers numerous advantages. It can broaden the upper arch, allowing the upper teeth to align better with the lower teeth, which improves the bite. Additionally, expanding the palate can create space for crowded teeth to align properly, potentially reducing the need for the extraction of permanent teeth. A high palate and narrow arch can also limit breathing passages. Research has indicated that expanders can widen these air passages, leading to improved breathing. Finally, expanders help create a broader, more appealing smile. The expansion process is most effective and stable when performed on a growing child or young teen.