Iris also went through a grinding teeth stage. She seems to do it occasionally now when her yet to come through teeth seem to be causing her pain. It's awful to listen to. Poor baby. Hope Ben doesn't do it for too long.
Oh dont get me started on teeth grinding - sends shudders through me. William thank goodness stopped fairly quickly (now I think about it), fingers crossed Ben does too. No real advice though
Bella does it when she has more teeth coming through. We give her a dummy to stop it It gets worse when she realises what it does and the noise it makes and she practices more!