: I understand that when DC is latched properly, the bottom teeth are covered by the tongue and are not able to bite down on the nipple. but the top teeth are still resting right on top of the nipple, right? So, maybe you mean to say that they can't bite with both sets at the same time. (?) Because my DS is leaving teeth marks: on my nipple the whole while he's eating and could bite in further if he wanted to.....