How to measure jaw-opening force (VIDEO) Tokyo Medical and Dental University This video is under embargo. Please login to access this video. Caption ・Patients are asked to relax and close their mouth. ・Place the adjustment belt and chin cap. ・The adjustment belt is secured as tightly as possible. ・Calibrate the value before each measurement. ・Patients are asked to open their jaws as wide as possible. Credit Department of Dysphagia Rehabilitation, TMDU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.