Evaluation of the microleakage of new bioactive restorative materials: a comparative in-vitro study

BACKGROUND: This in-vitro study aimes to compare the microleakage of different restorative materials namely EQUIA Forte (GC, Japan), Tetric Evoceram (Ivoclar Vivadent, Liechtenstein), and Activa BioACTIVE. METHODS: A standardized class V cavity has been created on the buccal surface of 40 sound premolar teeth. The cavity had the following measurements: 3 mm buccolingual height, 2 mm axial depth, and 4 mm mesiodistal width. The gingival margin was 1mm below the cementoenamel junction, whereas the coronal margin was on the enamel with cavosurface margins were butt joints all around. Four groups of teeth were restored according to the restorative materials. Under a stereomicroscope, the dye penetration test was used to measure the microleakage after thermocycling of the teeth. Data were compared using Kruskal-Wallis H and Mann-Whitney U Tests. RESULTS: Occlusal and gingival margins did not show statistically significant differences among the four groups, but an intragroup analysis revealed a significant difference. CONCLUSIONS: The type of restorative material did not appear to have a substantial impact on microleakage, according to the findings of the current investigation.