Marginal integrity of restorative materials plays an important role in success of restoration and also improves the longevity of restorations by decreasing the chances of microleakage.
Aim - To compare and evaluate the microleakage in class V cavities which were restored with different restorative materials (packable microhybrid composite resin and flowable nanohybrid composite resin) under confocal laser scanning microscope.
Methodology - This in-vitro study was performed on twenty human maxillary premolars which were extracted for orthodontic reasons. A standard wedge shaped cavity was prepared on the buccal surfaces of teeth with the gingival margin placed near Cemento Enamel Junction (CEJ). Teeth were divided into two groups of 10 each and restored with packable microhybrid and flowable nanohybrid composite resin and were subjected to thermocycling. Teeth were then immersed in 0.5% Rhodamine B dye for 48 hours. They were sectioned longitudinally from the middle of cavity into mesial and distal parts. The sections were observed under Confocal Laser Scanning Microscope (CLSM) to evaluate microleakage.
Statistical Analysis - One Way Analysis of variance (ANOVA) was done to compare the mean values across the two groups for numerical data (using the F distribution).
Results – microhybrid composite resin showed less microleakage which was statistically insignificant when compared to nanohybrid composite resin (p=1.0000).
Conclusion - Within the limitations of the current study it can be concluded that although all the tested groups showed microleakage in class V cavities, microhybrid packable composite resin showed comparatively less microleakage than nanohybrid flowable composite resin.
Impact Factor
2022: 6.012
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