Comparison of microleakage in resin modified glass ionomer cements and poly acids modified composites [compomers]

ABSTRACT

Microleakage of oral fluids and microbial components is a dynamic factor occurring at the tooth-restoration interface. Different restorative materials show different values of micro-leakage depending upon their composition, setting reaction and nature of physical and/or chemical bonds with the dental tissues. The aim of this study was to compare the microleakage of Resin modified Glass lonomer [Fuji II.LC] and Polyacid modified Composite Resins [Dyract]. It was a comparative cross sectional study which was carried out in the Department of Dentistry, Pakistan Institite of Medical Sciences [PIMS] Islamabad. Fifty healthy, unrestored extracted premolar teeth allocated randomly in to two groups. Class V cavities were prepared at the cemento-enamel junction in all fifty teeth, and restored with Fuji II.LC [GC America] and Dyract [Dentsply], 25 teeth in each group. All the teeth were placed in 2% basic fuchsin dye for 24 hrs at37C. Teeth were then embedded in cold cure acrylic resin, resectioned longitudinally in - ISOMETA, and the dye penetration at the enamel and cementum margin were scored at 10 X magnification stereo microscope and distinct leakage patterns were recorded. Data was analyzed using SPSS version 10.0. The resin-modified glass ionomers showed less microleakage than the polyacid modified composite resin especially at gingival margins