My son is 8 months old and just popped his fourth tooth. He has two on bottom, two on top. My husband and I have noticed the last two days or so that it sounds as if he’s grinding his teeth by moving his jaw back and forth. I’m sure it’s probably just a new sensation, because the first of the top teeth is only just beyond his gum line. But I wanted to check with the moms of glow and see if any of you have anecdotal experience with this. Did your babies do something like this? Did they grow out of it? We always place a finger on his chin whenever we hear him do it and he stops while our finger is there. But then he’ll start it again a couple minutes later.