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A commercially available dental Glass Ionomer Cement (GIC) was studied after setting at room temperature (300 K) to understand its DC electrical conductivity, dielectric and thermal properties. The dental GIC's are supposed to have free mobile charge carriers like Fions. Interestingly this material loses its conductivity above 80˚C and behaves like a nonpolar substance. The frequency dependent dielectric studies also indicate the loss of mobile charge carriers in the samples annealed at 80˚C.doi:10.4236/jbise.2012.511078 fatcat:agcey76w7vblje6kbjnrvczysq