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.
lateral occlusion occlusion of the teeth when the lower jaw is moved to the right or left of centric occlusion. lingual occlusion malocclusion in which the tooth is lingual to the line of the normal dental arch. mesial occlusion the position of a lower tooth when it is mesial to its opposite number in the maxilla. normal occlusion the contact of the upper and lower teeth in the centric relationship.