GINGIVITIS (IMAGE) University of Cincinnati Caption University of Cincinnati engineers have developed a test that uses saliva to warn consumers about periodontal disease, which if left untreated can lead to tooth loss, stroke, heart disease and other illnesses. Credit Andrew Steckl and Daewoo Han Usage Restrictions None 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.