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.
A common articulation error is a âlispâ where the /s/ sound is pronounced as a /th/ sound. Intervention would focus on learning how to produce the /s/ sound correctly and incorporating it into speech. Phonological therapy targets patterns of sound errors that continue past an appropriate age.