Is that within the normal range?
DS will be 19 m.o. in a week's time and is biting and chewing everything in sight, including his own arm & wrist. His latch feels uncomfortable when breastfeeding, which happened before when teething. He has all his other teeth.
He doesn't seem more dribbly than usual (normally teething brings out rivers of the stuff) and there's no sign of anything going on in his mouth as far as I can tell.