Carved Ear Models (IMAGE) University of Washington Caption In the study, experienced surgeons preferred carving the UW's models (in white) over a more expensive material made of dental impression material (in blue). Credit University of Washington Usage Restrictions With credit 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.