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Niger J Clin Pract. 2019 Jul;22(7):961-970. doi: 10.4103/njcp.njcp_644_18.

The evaluation of microleakage and fluoride release of different types of glass ionomer cements.

Author information

Department of Restorative Dentistry, Dicle University, Faculty of Dentistry, Diyarbakir, Turkey.
Department of Restorative Dentistry, Inonu University, Faculty of Dentistry, Malatya, Turkey.
Department of Restorative Dentistry, Faculty of Dentistry, Adiyaman University, Adiyaman, Turkey.
Department of Biostatistics, Dicle University, Faculty of Medicine, Diyarbakir, Turkey.



The aim of this study was to evaluate six different glass ionomer cement (GIC)-based restorative materials through comparisons of microleakage and fluoride release.

Materials and Methods:

For microleakage, 30 teeth were randomly separated into 6 groups of 5: Group 1 (Dyract: compomer), Group 2 (Freedom: compomer), Group 3 (Equia: high-viscosity glass ionomer cements), Group 4 (Fuji IX: resin-modified glass ionomer cement), Group 5 (Ketac Molar: traditional glass ionomer cement [TGIC]) and Group 6 (Voco: TGIC). For fluoride release of six different GIC-based restorative materials, standard samples were prepared of 4 mm thickness and 7 mm diameter. A total of 60 samples were obtained as 10 samples from each group. The analyses were made using a Thermo Orion 720 A+ ionometer with the Orion fluoride electrode. At the end of 24 h, 72 h, 7 days, 14 days, and 30 days, the electrode was placed into the dish containing the sample, distilled water, and TISAB II; a reading was taken; and the value shown on the screen was recorded.


For microleakage, a statistically significant difference was determined between the groups in respect of the occlusal variable (P < 0.05), no statistically significant gingival variable (P > 0.05). About fluoride release: According to the repeated measures variance analysis results, the difference between the groups, and between the time-group interaction and according to time, was found to be statistically significant (P < 0.05).


In terms of microleakage, it was concluded that all materials could be used in clinical applications. The Equia high-viscosity glass ionomer cements (HVGIC) was determined to be the material with the highest fluoride release value.


Fluoride release; glass ionomer cement; microleakage

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