الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Within twenty-four hours of mixing, GIC undergoes a setting reaction that renders it susceptible to moisture and temperature fluctuations.The recommendation has been to coat the GIC’s surface to overcome the problem of water sensitivity. As long as this coat is on the restoration, the mechanical qualities are preserved. Recently, a new resin coating for traditional GICs has been created, which is distinguished by the incorporation of nanofiller particles to improve the GIC’s marginal sealing and wear resistance.The application of self-adhesive coating and ageing influenced the load-bearing capacity of the restorative materials. The coated glass ionomer cement was much harder than the RMGIC and resin composite, but had significantly lower flexural strength. The wear resistance was not greatly improved by a resinous coat. Under dry conditions, resin coating enhanced the flexural strengths of GICs. For all glass ionomer restorations, a protective covering, such as G-coat plus or light polymerized low viscosity unfilled resin adhesives, is required to strengthen the wear resistance of the restorative materials.