Teeth Stress Distribution (IMAGE) Max-Planck-Gesellschaft Caption This shows maximal principal stress distribution observed in three gorilla teeth of an unworn (left), a lightly worn (middle) and a worn (right) condition. Credit MPI f. Evolutionary Anthropology 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.