Image of Glass Cement Fillings (IMAGE) Queen Mary University of London Caption This shows typical dental glass cement, a UK innovation. It is made from glass powder, liquid polymer and water, and is the preferred non-toxic choice to mercury amalgam, which has been used for filling teeth for almost 200 years. Credit Semmelweis University Dental School 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.