From the point of view of GI bleeding, however, the demarcation between the upper and lower GI tract is the duodenojejunal (DJ) junction (ligament of Treitz); bleeding above the DJ junction is called upper GI bleeding, and that below the DJ junction is called lower GI bleeding.
Answer Wiki. Dental occlusion is the contact between the teeth of the upper and lower jaw. It is basically how your teeth fit together. The cusps (the high rounded parts on the tooth surface) of the tooth come in contact with the grove of the opposing arch teeth a maximum intercuspation is achieved which means the teeth fully bite.
the branch of dentistry concerned with growth and development of orofacial structures, including irregularities of teeth, malocclusion, and associated facial problems. orÂ·thoÂ·donÂ·tics. That branch of dentistry concerned with the correction and prevention of irregularities and malocclusion of the teeth. orthodontics. The dental speciality concerned with the correction of irregularities of tooth placement and in the relationship of the upper teeth to the lower (occlusion).