Effect of Different Curing Distances on Some Physicomechanical Properties of Bulk-Fill Composite Resins

Abstract

This study was carried out to evaluate flexural strength, microhardness, water sorption and solubility both immediately and after 1 year storage time as well as cuspal deflection of three different bulk-fill composite resins used as a base. For flexural strength testing a total of 240 specimens were divided into 3 groups according to the type of bulk-fill resin composite. Each group was divided into two subgroups according to the curing distance (2 and 4 mm from the surface), and further subdivided into two subgroups according to the storage time (24 hours and 1 year) in distilled water. For microhardness testing a total of 60 specimens were divided into 3 groups according to the type of bulk-fill resin composite. Each group was divided into two subgroups according to the curing distance (2 and 4 mm from the surface), and further subdivided into two subgroups according to the storage time (24 hours and 1 year) in distilled water. For water sorption and solubility testing a total of 60 specimens were divided into 3 groups according to the type of bulk-fill resin composite. Each group was divided into two subgroups according to the curing distance (2 and 4 mm from the surface), and further subdivided into two subgroups according to the storage time (24 hours and 1 year) in distilled water.