My niece always complains about her jaw clicking. Is this because of the growing plates? (she's 14) One side of her jaw is wider than the other. The narrower side is the one that's clicking. Does this mean that the non clicking side is already developed. The same thing happened to me before and to this day one side of my jaw is slightly wider and stronger than the other. How much wider would a jaw grow from 14 yrs to 25 yrs old. Could mine be still developing as well? I like my jaw so ihope not