Abstract
Summary: The assessment of swallowing function for each of our patients is a necessary though sometimes difficult process. A different theoretical framework on the connection between abnormal tongue activity, tissue reaction and swallow patterns has been presented. The lingometer has been developed to diagnose abnormal tongue force, based on this different theoretical framework. A positive response will indicate a need for a tongue retraining program in addition to orthodontic treatment, in order to minimize relapse by eliminating any unfavorable tongue accommodation.