Unequal jaw growth. In some individuals, the upper and lower jawsfail to grow properly. This can cause difficulty in speaking,
eating, swallowing, and breathing. While some of these problems -- likeimproper teeth alignment --
can be corrected with braces and otherorthodontic appliances, more serious problems
require oral surgeryto move all or part of the upper jaw, lower
jaw, or both, into a newposition that is more
balanced, functional, and healthy.