Class I Bite - A Class I bite is the desired bite where the jaws and teeth line up in a straight line.

Class II Bite - A Class II bite is familiar to most as an overbite in which the upper teeth extend out over the bottom teeth. In decades past, an overbite was treated by extracting teeth. Today, we recognize Class II bites as a result of underdevelopment of the lower jaw. Rather than extracting teeth, a more common treatment today allows us to modify growth by bringing the lower jaw forward.

Class III Bite - A Class III bite, also known as an underbite, is treatable in some cases without extracting teeth. An underbite used to be seen as the overgrowth of the lower jaw. In today’s world, research shows that most underbites are due to insufficient growth of the upper jaw.