Buck teeth, or the more accurate, technical term: overjet, is a phrase used to describe a particular type of maloclussion where the maxillary incisors, the two upper front teeth, project forward to such a degree that they are very prominent and obvious. In some cases these teeth actually rest on the lower lip while the subject is in the postural, resting position. Often the surrounding upper teeth are also projected forward in an arc but are hidden behind the lips so that the appearance results in only the two front teeth "sticking out" of the mouth.