Advantages And Disadvantages Of Glass Ionomer Cement

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Glass ionomer cement[GIC], invented by Wilson and Kent, has been used as a dental restorative material for more than four decades and its properties are constantly improved to overcome its shortcomings. The unique properties of GIC include direct adhesion to tooth and base metals [1], anticariogenic properties [2], thermal compatibility with tooth enamel and dentin, minimized microleakage at the tooth–enamel interface, biological compatibility, and minimal cytotoxicity. The disadvantages of GIC such as Brittleness, low tensile and flexural strengths has limited its use to low stress-bearing sites such as Class III and Class V cavities [3]. Various studies have been done to improve the properties of GIC by incorporation of materials such as bioglass, CPP-ACP etc. In our study we have incorporated chitosan to enhance the properties of GIC.
Chitosan is a natural linear bio-polyaminosaccharide. It is a hydrolyzed (deacetylated) derivative of chitin which is the principal component
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Though there are different classes of fluoride releasing materials, their properties need to be improved significantly before considering them as universal restorative materials. Although a single material would be desirable, compromises may be necessary when selecting materials.
CONCLUSION
Within the limitations of the present study, it can be concluded that stronger, more durable material (10v/v% Chitosan modified glass ionomer cement) could be selected for posterior occlusal restorations, while higher fluoride releasing material (50v/v% Chitosan modified glass ionomer cement) could be selected for individuals with high caries risk and in areas subjected to less stress.
It is hoped that the laboratory measurements of flexural and Micro-Shear bond strength may aid the interpretation of future studies of the clinical performance of Chitosan modified

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