How do your top and bottom teeth meet ?
An overbite is very common and occurs when the top teeth protrude past the lower teeth, covering them and reducing the height of your smile.
An under bite is when the bottom teeth are positioned forward, giving the appearance that the jaw is pushing outwards from the mouth.
An open bite is when there is a gap between top and bottom front teeth when you bite down.
A normal bite is where your teeth meet perfectly in the middle when you bite down.