In vitro microleakage of glass-ionomer composite resin hybrid materials

The purpose of this study was to evaluate the microleakage of six glass-ion omer composite resin hybrid materials compared with a glass-ionomer cement and a composite resin. Standardized class 5 dentin cavities were prepared o n root surfaces of 240 extracted human teeth that were randomly assigned to eight groups and restored using the following restorative systems: (I) Vit remer, (II) Compoglass, (III) Photac-Fil Aplicap, (IV) Variglass, (V) Dyrac t, (VI) Fuji II LC, (VII) Ketac-Fil Aplicap, and (VIII) Z100. The teeth wer e thermocycled, placed in a 2% methylene blue solution,and sectioned with d iamond disks. Dye penetration was scored on a scale of 0-3. Results showed no significant differences among groups VIII, IV, I, V, VI, III, and II. Th ere were also no significant differences among groups VI, III, II, and VII.