Bulk-fill resin-based composite restorative materials: a review

Abstract

Resin-based composite (RBC) materials are increasingly being used for the restoration of posterior teeth. The increasing demand for aesthetic, tooth-coloured restorations coupled with the patient's concerns regarding the use of mercury containing restorations, has driven a surge in the use of RBC materials. With the Minamata Convention in 2013 calling for the phase-out of dental amalgam and dental schools increasingly teaching techniques for RBC restorations in posterior teeth, it is likely that the dental profession's reliance upon RBC for the restoration of posterior teeth will only increase. In order to simplify and speed-up the placement of large posterior RBCs, manufacturers have produced a range of materials which can be placed in single or deeper increments, known as bulk-fill RBCs. Over a relatively short period of time many bulk-fill RBCs have been marketed quoting increment depths between 4-10 mm. The placement of these larger increments of RBC may reduce the time needed when placing posterior restorations and thereby reduce technique sensitivity. This article aims to review the properties and handling characteristics of the bulk-fill RBC materials currently available, while advising the optimal techniques of placement.

Depth of cure of bulk fill resin composites: A systematic review

“…Conversely, flowable BFRCs are indicated to fill most part of the cavity as dentin replacement and the remaining area, including occlusal anatomy, is completed using a conventional or high‐viscosity BFRC . Additionally, there is an alternative delivery system that uses ultrasonic waves to modify viscosity of specific bulk‐fill materials such as Sonic TM fill (Kerr Corporation) and Sonic TM fill 2 (Kerr Corporation) . From a clinical perspective, technique simplicity offered by BFRCs arouses great interest due to reduction in chair‐time and operator sensitivity, since incremental technique is no longer imperative for direct restorations’ procedure .…”

Diametral Tensile Strength, Flexural Strength, and Surface Microhardness of Bioactive Bulk Fill Restorative

“…3 In addition, the type of monomer has a significant influence on the polymerization reaction, mechanical properties, and water sorption of RBCs. 4 The durability and performance of bulk-fill RBCs can be evaluated by characterization of their mechanical properties. 5 For instance, material hardness is a measure of degree of polymerization and resistance to surface wear.…”

Effect of 2% Chlorhexidine Gluconate on the Degradation of Resincomposite–dentin Bond Strength When Using Self-Etch Adhesive Systems

“…Currently, composite resins are widely used for esthetic restoration [1]. However, composite resin restorations may fail in the long term, particularly at the adhesive resin-dentin interface because of degradation processes that occur in the oral cavity [2,3].…”