Did you have asthma as kid? I know a couple of people whose teeth are wrecked from inhaler usage. Now they tell you to rinse your teeth after using them, but didn't in the past.
No, but I do have a smaller lower jaw and wear a night guard because I do sometimes clench and grind (depending on stress levels, caffeine intake, etc). This might cause excessive wear. My mother also suffers from bruxism.
