Please tell me they out grow this pretty quickly!! My 2 1/2 year old grinds her teeth all the time, and gives daddy the major heebie-jeebies when she does it. Such a horrible sound. Thankfully these are temporary choppers, but its still gotta have an impact on future teeth, thus driving up orthodontist bills. Who cares about the $$ right now though...just make the noise stop!!!! Worst part is, you get on her about it, and she gives you a blank look....no clue what she's doing wrong.