Comparative Evaluation of Microleakage of G-Aenial, Bis-GMA Nanohybrid and Bis- GMA Microhybrid Flowable Composites in Class I Cavities – An in Vitro Study.

The most vulnerable area while restoring a tooth surface lies at the interphase between the restoration and the tooth margins.This area is the weakest junction in a tooth and serves as a potential pathway for microorganisms to invade into the tooth. This leads tofailures in existing restorations paving way for the initiation of secondary caries progression. An advanced restorative material bridges thisgap and seals off the weak interphasic junctions. Flowable composites having adequate strength and lesser polymerisation shrinkage werechosen. The aim of this study was to find a material having lesser microleakage deemed suitable for restorative purposes. Three types offlowable composites were chosen, which had the objective of being tested as a flowable material for evaluation of microleakage amongstthe three tested groups. Dye penetration test was carried out to evaluate the amount of microleakage occurring under flowable resinswhich were then evaluated under a light reflecting digital compound microscope. A total of 45 extracted human premolars were selectedfor the study; scoring of specimens was done with the help of an Ordinal scale to detect microleakage. The results obtained from thestudy was that G-aenial Universal Flo, performed superior than Tetric N flow which was then followed by Kulzer Charisma Flo whichshowed highest dye penetration. The amount of dye penetration reflects directly the microleakage occuring at the interphases ofrestoration. The novelty of this study lies in the fact that this is one of its kind of study evaluating the amount of microleakage occurringbetween three different flowable composites. It was concluded that G-aenial Universal Flo, showed the least amount of microleakagewhen compared against two similar flowable composites to provide an adequate marginal seal.Keywords: , , , , ,