Lower First Molar (IMAGE) Proceedings of the National Academy of Sciences Caption This is a three-rooted lower first molar and its corresponding jaw in a recent Asian individual. Credit Image courtesy of Christine Lee (California State University, Los Angeles, CA). 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.