Q. Hi, I was wondering if you could help. I think I have a crossbite; my teeth dont sit properly against each other, and if i try toi, my bottom front teeth go behind my top teeth, although my jaw is quite forward so doesnt seem like an underbite. This makes my mouth curve down making me look unhappy even though I’m not, and makes my mouth and jaw look small compared to the rest of my face. I was wondering if invisilign might help this, or surgery, or if this is even something that can be fixed. It feels like my jaw is out of line but I guess I’m use to it so havent done anything. thanks a lot foryour time