I grind my teeth, in fact the dentist said that if I was seventy I would have great teeth. However seeing that I am more then 30 years younger then that. At this point I wear a nightguard and probably will for the rest of my life.

Just to let you know that lockjaw is something a little different. Although I think that you grind your teeth because of it.

Talk to your dentist, maybe there is something that can be done since he is still young. I guess that there are alot of reason that someone can grind there teeth. If you can find out why maybe it can be corrected.