Damaged Tooth (IMAGE) McMaster University Caption This is a tooth from a 23-year-old archaeological male from St. Matthew, Quebec (1771-1860), displaying two episodes of childhood vitamin D deficiency: one under the dentin horn and the other seen in the lower right-hand corner of image. Credit McMaster University 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.