Abstract
Context: The application of composite resins has greatly increased due to their optimal physical, mechanical, and
aesthetic properties. Recently bulkfill composites are introduced which simplifies the restorative procedures and
saves time.
Aims: The aim of the present study is to evaluate and compare the depth of cure of resin-based composites
restorations: Sculptable bulk-fill composite Filtek Z250 Xt (3M, ESPE), Flowable bulk-fill composites G-ænial
Universal Flo (GC America) and Dual cure bulk fill Multi Core Flow (Ivoclar Vivadent).
Methods and Material: Thirty black opaque silicone hollow cylindrical molds were divided into 3 groups (n=10)
and bulk filled with each of the three composites and light cured for 20 s followed by 24 h storage in water. The
surface hardness was measured on the top and the bottom by recording Vickers hardness number by Vickers
hardness indenter.