3.You Push Your Body
Studies on triathletes show that endurance training can wear down your tooth enamel more. The more intense their workout schedule, the more likely they were to have cavities. Scientists aren’t exactly sure why, but may think it has to do with how exercise changes the amount of saliva in your mouth.
4.Your Sinuses Are Stuffed
Pain in your upper back teeth might be a sign of a sinus infection. It’s pretty common, since your teeth are close neighbors of your nasal passages.