Posterior cross bite occurs when one or more of the premolar lower jaw teeth overlap the upper jaw teeth. This is a rare condition that occurs in the longer-nosed dog breeds. A wry mouth or wry bite occurs when one side of the jaw grows more than the other. Wry bites show as triangular defects in the incisor area. Some of the incisors will meet their opposing counterparts, while others will not.
Wry bite is a severe inherited defect.
Base canines occur when the lower canine teeth protrude inward often producing damage to the upper palate. This condition is either due to retained deciduous teeth, or an overly narrow mandible. Base narrow canines may be corrected through orthodontic devices that push the teeth into normal occlusion. An open bite occurs when some incisors are displaced vertically and do not touch. Often, the tongue will protrude.