ross bites and overbites are both types of malocclusions, which literally means “poor bites”. They result from a mismatch in the bite of your top teeth and bottom teeth. If you have either a cross bite or an overbite, it is likely that your bottom jaw is smaller than your top jaw; this means that one side of your jaw touches the other when you close your mouth completely. The irregular alignment of your upper and lower teeth may be more severe on one side than the other. In such a case, you may have a stronger preference for food on one side rather than another.