After 5 years old, it is an approximation, but a fairly good approximation, in terms of looking at the amount of wear on the teeth, are there teeth missing, that kind of thing.  -   Ron DeHaven     Quotes
After 5 years old, it is an approximation, but a fairly good approximation, in terms of looking at the amount of wear on the teeth, are there teeth missing, that kind of thing. Ron DeHaven