My son (born Oct. 5th of 03) has two teeth on top and bottom (center ones) and is getting the two on both sides of the the top (canines?) anywho, I just realized that he "grinds" his teeth together during the day! What's that about? I've looked at them, and the tips/edges look a bit different in color (more white) and I'm just worried that he might chip them or wear them down. What can I do, is this normal, why is he doing it, anyone else having or had the same "problem"?