10.22376/ijlpr.2023.13.5.P116-P122 ijlpr 2023; doi Revised On 25 May, 2023 Accepted On 6 June, 2023 Published On 1 September, 2023 Funding This research did not receive any specific grant from any funding agencies in the public, commercial or not for profit sectors. Copyright @ International Journal of Life Science and Pharma Research, available at www.ijlpr.com Int J Life Sci Pharma Res., Volume13., No 5 (September) 2023, pp P116-P122 This article is under the CC BY- NC-ND Licence (https://creativecommons.org/licenses/by-nc-nd/4.0) Citation Mrinal Nadgouda, Aditya Patel, Shraddha Patel, Pradnya Nikhade, Manoj Chandak, Ladusingh Rajpurohit and Swayangprabha Sarangi , Comparative Evaluation of Microleakage of G-Aenial, Bis-GMA Nanohybrid and Bis-GMA Microhybrid Flowable Composites in Class I Cavities – An in Vitro Study..(2023).Int. J. Life Sci. Pharma Res.13(5), P116-P122 http://dx.doi.org/10.22376/ijlpr.2023.13.5.P116-P122 Received On 27 February, 2023 Mrinal Nadgouda , Department of Conservative Dentistry & Endodontics, Sharad Pawar Dental College, DMIHER, Wardha *Corresponding Author Research Article International Journal of Life science and Pharma Research Comparative Evaluation of Microleakage of G-Aenial, Bis-GMA Nanohybrid and Bis- GMA Microhybrid Flowable Composites in Class I Cavities – An in Vitro Study. Mrinal Nadgouda *1 , Aditya Patel 2 , Shraddha Patel 3 , Pradnya Nikhade 4 , Manoj Chandak 5 , Ladusingh Rajpurohit 6 and Swayangprabha Sarangi 7 1*,2,3,4,5,7 Department of Conservative Dentistry & Endodontics, Sharad Pawar Dental College, DMIHER, Wardha 6 Department of Public Health Dentistry, Dr D.Y. Patil Dental College, Pune Abstract: 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 to failures in existing restorations paving way for the initiation of secondary caries progression. An advanced restorative material bridges this gap and seals off the weak interphasic junctions. Flowable composites having adequate strength and lesser polymerisation shrinkage were chosen. The aim of this study was to find a material having lesser microleakage deemed suitable for restorative purposes. Three types of flowable composites were chosen, which had the objective of being tested as a flowable material for evaluation of microleakage amongst the three tested groups. Dye penetration test was carried out to evaluate the amount of microleakage occurring under flowable resins which were then evaluated under a light reflecting digital compound microscope. A total of 45 extracted human premolars were selected for the study; scoring of specimens was done with the help of an Ordinal scale to detect microleakage. The results obtained from the study was that G-aenial Universal Flo, performed superior than Tetric N flow which was then followed by Kulzer Charisma Flo which showed highest dye penetration. The amount of dye penetration reflects directly the microleakage occuring at the interphases of restoration. The novelty of this study lies in the fact that this is one of its kind of study evaluating the amount of microleakage occurring between three different flowable composites. It was concluded that G-aenial Universal Flo, showed the least amount of microleakage when compared against two similar flowable composites to provide an adequate marginal seal. Keywords: G-aenial universal flo, tetric n flow, kulzer charisma flow, flowable composite, microleakage, nanohybrid, microhybrid. ISSN 2250-0480 Flowable Composites in Class I Dental Cavities