A Journey through the World of Glass Ionomer Cements in Orthodontics.
Journal Title: International Journal of Dental Science and Innovative Research (IJDSIR) - Year 2019, Vol 2, Issue 2
Abstract
The development of the first glass ionomer cement by A. D. Wilson and B. E. Kent in 1971 resulted in cements that have adhesive properties of polycarboxylate cements and hardness, insolubility of silicate cements. Glass ionomer cements contain a powder similar to that of silicate cements and a polyacrylic liquid similar to that of polycarboxylate cements. Glass ionomer cements possess unique combination of properties that make them potentially useful in clinical orthodontics. Firstly, they adhere to tooth enamel and metal. Secondly, they release fluoride and thereby may prevent enamel decalcification. Also, they can be removed more easily than composite resins at the time of debonding. This article gives a brief review of the role played by glass ionomer cements in orthodontic practice. Introduction The first glass ionomer cement developed by A. D. Wilson and B. E. Kent was a product of an acid-base reaction between basic fluoroaluminosilicate glass powder and polycarboxylic acid in the presence of water. The nature of the set cement comprised an organic-inorganic complex with high molecular weight.1 Therefore, glass ionomer cement can be defined as a water based material that hardens following an acid-base reaction between fluoroaluminosilicate glass powder and an aqueous solution of polyacid.2
Authors and Affiliations
Dr. Olavo Neil
Keywords
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