1ST INTERNATIONAL STUDENT CONGRESS - HACETTEPE UNIVERSITY, FACULTY OF DENTISTRY, Ankara, Türkiye, 5 - 06 Nisan 2019, cilt.43, sa.2, ss.26
Purpose: The aim of this in vitro study was to investigate the microleakage of fluoride releasing restorative materials.
Materials and Methods: A total of 48 upper human premolar teeth was used in this study. Teeth were cleaned and polished with brush, rubber cup and nonfluoride pumice. They were stored in distilled water containing 0.1% thymol for disinfecting for 24hours. Box-shaped Class-V cavities (4x2x2mm) were prepared on the buccal surfaces of the teeth and divided into 4 groups (n=12 each). The cavities were restored using composite resin (Beautifil II) or restorative glass ionomers (Fuji Bulk, Equia Forte Fil and Riva self-cure HV) according to manufacturers’ instructions. After finishing-polishing procedures, teeth were stored in distilled water at 370C for 24h and subjected to thermocycling (+5/+550C/x500). They were then immersed in silver nitrate solution at 370C for 24h. Teeth were separated buccolingually and evaluated for dye-penetration using a stereomicroscope (X25 magnification). Data were analysed with Kruskal-Wallis and Mann Whitney-U Tests. P value was set at 0.05.
Results: Significant differences were found among groups (p<0.05). Riva self-cure HT and Fuji Bulk showed the highest microleakage whereas Equia Forte Fil and Beautiful showed the least microleakage. No significant differences were found in the microleakage between gingival and occlusal walls of the restorations (p>0.05).
Conclusion: Tested fluoride-releasing restorative materials showed different microleakage scores.
Keywords: Restorative glass ionomer, composite resin, microleakage