AUTHOR(S): Elif Ok, Hakan Kamalak and Canan Aksu Canbay

ABSTRACT:The purpose of this study is to investigate the evaluation of Thermogravimetric analysis and differential thermal analysis of 5 different glass ionomer cements; EQUIA Forte Fil (GC, Tokyo, Japan, EQF), Fuji II LC Light-Cured Glass-Ionomer Cement for Restorative Filling (GC Corp, Tokyo, Japan, F2S), Fuji IX Conventional glass ionomer Cement for Restorative Filling (GC Corp, Tokyo, Japan, F9S), Glass carbomer (Glass Carbomer, GCP), Ionoseal (Glass ionomer cement, VOCO, Cuxhaven, IOS). They were filled in teflon molds (height: 4 mm, width: 6 mm) and stored in distilled water at 37 0C / 24 hours. The Thermogravimetric analysis and differential thermal observations were made on a Schimadzu DTG-60 AH by haeting from room temperature to 950 ËšC at a heating rate of 10 ËšC/min. The average sample size was 20 mg and the nitrogen flow rate was 50 ml/min. DTA was used to determine the temperature of the onset crystallisation and melting. TG was used to determine the weight loss by the effect of high temperature.

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