Nelson Rolihlahla Mandela was the first South  African president to be elected in a fully representative  democratic election in 1994. He was also the first non-European  pâ¦resident of South Africa.     He was born 18 July 1918 in South Africa.
Semi-adjustable articulator with mounted casts. An articulator is a mechanical device used in dentistry to which casts of the maxillary (upper) and mandibular (lower) teeth are fixed, reproducing recorded positions of the mandible in relation to the maxilla.
Chapter 9 2. JOINTS. (Bones are too rigid to bend without causing damage.) (Bones are held together at joints by flexible connective tissue.) (Imagine how a cast over the knee prevents flexibility.) Articulation (Joint) is a point of contact between bones, between cartilage. and bone, or between teeth and bones. Arthrology - Scientific study of joints. *The joints structure determines how it functions. (Some joints permit no movement, others permit slight movement, and still. others afford considerable movement.)