human
Is there a way to determine a person's age by using their teeth?
assistant
Yes, there is. Teeth are made up of layers of enamel that can be used to estimate an individual's age. The outer layer of the tooth called dentin contains tubules that run through it and contain nerves that allow us to taste food. As we get older, these tubules become more narrow and fewer in number which makes it harder for us to taste foods.