The Dahl appliance is used to generate space between the upper and lower jaws. Traditionally this has been used in order to aid the placement of fillings on worn front teeth. Alterations to the teeth, from tooth wear or tooth loss, can lead to a decreased facial height due to physiological compensation that allows for maintenance of upper and lower teeth contact.[1] The Dahl appliance can increase the height of a patient's face and correct for this loss of facial height.