I’m Dr. Joe Neely. I practice with the Barton Oaks Dental Group. I’m going to talk about the cause of tooth grinding. Simply said, the cause of tooth grinding, is Mom and Dad. It’s hereditary in terms of the mechanism, which we don’t fully understand, that causes some people to grind their teeth, or clench their teeth, when they’re under emotional, physical, or nutritional stress, but also, even when they’re not under stress. Grinders grind. It’s estimated that somewhere between a third and two thirds of the population, clench or grind their teeth, on a regular basis. If you put a grinder under stress,.