Introduction The development of the Original Glass Ionomer cement by Wilson and Kent 1969 was significant in that it made available for the first time a restorative dental material that had long-term adhesion to the tooth structure, along with cariostatic potentials. Recent development in the chemistry and clinical application of Glass-Ionomer cements offer great promise in the treatment of early carious lesion. History The GIC were invented by Wilson and Kent in 1969s and developed by Mclean and Wilson during 1970s (Q.I. vol. 25 No. 9, 1994). This cement was invented particularly to overcome the deficiencies and limitations of silicate cements i.e. high solubility mechanical adhesion to tooth and severe pulp irritant which was the principal restorative material until than. Invention The invention of GIC resulted directly from basic studies on dental silicate cements (Wilson et al 1972) and studies where in the phosphoric acid in silicate cement was replaced by organic chelating acids (Wilson 1968).
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