Myofunctional Aplliance
These are fixed or removable orthodontic appliance which use forces generated by stretching of muscles, fascia and/or periodontium to change skeletal or dental relationship.
These are mainly used during the developing stage of children if there are signs of dental and/or skeltal relationship. In this case there is excessive development of upper jaw, placing it forward than lower jaw. So, child would be having trapped lower lip between upper and lower teeth.The myofunctional appliance restricts or redirect the gowth of upper jaw and stimulate the growth of lower jaw.