Image of Severe Periodontitis and Plaque (IMAGE) University of Toronto - Faculty of Dentistry Caption Plaque scraped from gums can be used to analyze disease. Credit H. Tenenbaum 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.