“AN IN VITRO ANALYSIS COMPARING MICROLEAKAGE BETWEEN SMART DENTIN REPLACEMET AND FLOWABLE COMPOSITE, WHEN USED AS A LINER UNDER CONVENTIONAL COMPOSITE.”
Ashwini Marurkar*, Dr. K.S. Satishkumar and Dr. Ratnakar P.
ABSTRACT
Aim - The aim of this study is to compare microleakage of two different flowable composites when used as a liner under one common conventional composite. Materials and Metods - 40 extracted human maxillary 1st premolar teeth were taken for the study. Standard Class II cavities were prepared. Specimens were divided into 2 groups according to the liner material used:
Group1: Smart Dentin Replacement.
Group2: Tetric N Flow
The etchant and primer was applied to the prepared cavity for 20 seconds. Bonding agent is applied and light cured for 20 seconds. The liners in 1mm thickness were applied according to their respective groups and light cured for 20 seconds. All specimens were restored with same Nanohybrid Composite using an incremental technique & light-cured for 20 seconds. The teeth were subjected to thermocycling. Each sample was sectioned buccolingually through the center of the restoration. The linear dye penetration was studied under SEM. Result - The gap observed in teeth lined with smart dentin replacement was less compared to the teeth lined with Tetric-N-Flow, but none of the groups showed complete adaptation with dentin.
Keywords: SDR, Flowable composite, liner, microleakage.
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