ceramic crown fatigue test (IMAGE) The University of Hong Kong Caption Fibre-reinforced composite elliptical frustums - dentine analogue material (substrate) in ceramic crown fatigue test. Credit The University of Hong Kong Usage Restrictions N/A License Original 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.