These devices are used to widen the arch of the jaw if it is too curved to achieve better alignment. This makes the upper jaw wider allowing a gradual treatment process for anomalies in the growth rates of the upper and lower jaws. The said process can be used to treat health affecting teeth problems where the person cannot properly chew and eat certain foods preventing them from getting balanced diet. It can also serve a more cosmetic side of tooth care where a misaligned jaw can lead to speech difficulties and many other cosmetic reasons. After the treatment phase, it still takes a long time for the jaw and other underlying structures to heal and become permanent which means this type of treatment usually takes a long time to complete.