A Comparative Assessment of Microleakage of Packable Composite Using Two Liners

Abstract

AIM: This study evaluates the microleakage of packable composites with liners using self etch and total etch dentin adhesive.

MATERIAL & METHOD: Standardized Class II cavities were prepared on 60 extracted maxillary premolars. Group Ia and IIa are control group restored with  Filtek P 60 Packable composite using 3M single bond Adper and 3M single bond universal as bonding agent without using any liner.

In group Ib, Ic teeth were restored using Filtek P 60 Packable composite along with

Filtek Z350XT flowable restorative and 3M ESPE Vitribond RMGI as liner with 3M single bond Adper. Similarly in group IIb and IIc 3M single bond universal was used as bonding agent. Thermocycling was done at 5,37 and 55degree3 followed by dye penetration, sectioning and stereo microscopic evaluation.

RESULTS: Kruskal Wallis, ANOVA was performed for intergroup comparison. It was concluded that group IIa had maximum microleakage followed by IIb and IIc. Also Group Ia had more microleakage as compared to Ib, Ic. Moreover Ia had more microleakage than IIb and IIc.

CONCLUSION: Resin modified glass ionomer cement when used as liner in combination with self etch adhesive and packable composite exhibited least microleakage and this difference is  statistically insignificant  when compared with flowable composite as a liner.