Abstract
Objective: This study aimed to identify the shear bond strength of two different restorative particulate resin composites with a short fiber-reinforced resin composite (SFRC) substructure.Methods: Two restorative particulate resin composites, G-aenial PosteriorTM (Group A, 10 specimens) and Tetric N-Ceramtm (Group B, 10 specimens), were used as an upper layer of everX posteriorTM, an SFRC. A shear bond strength test was performed using a universal testing machine with a load of 100 kgf and a crosshead speed of 0.5 mm/min. The data were analyzed statistically using the independent samples t-test.Results: The mean shear bond strength values were found to be18.64±1.5 MPa (Group A) and 22.05±1.8 MPa (Group B). A significant difference in shear bond strength between the two groups was found.Conclusion: The shear bond strength value is higher in the Tetric N-CeramTM restorative particulate resin composite with SFRC as a substructure than the G-aenial PosteriorTM restorative particulate resin composite.
Highlights
Resin composite materials with fiber reinforcement have been developed to improve the mechanical properties of dental materials [1]
The bond between the two resin composites (FRC combined with a restorative particulate resin composite) is very important to ensure that the material acts as a unit of a restoration [4]
A significant difference was found in the shear bond strength value between the short fiber-reinforced resin composite (SFRC) and the specimens with both types of restorative particulate resin composites
Summary
Resin composite materials with fiber reinforcement have been developed to improve the mechanical properties of dental materials [1]. Fiber-reinforced resin composites (FRCs) are structural materials that have at least two different constituencies. These types of composites consist of fibers that act as a reinforcement, providing strength, and stiffness; the matrix around the fibers supports and facilitates the dental work being done [2]. FRCs are used to manufacture fixed dentures, removable dentures, periodontal splints, and orthodontic retainers [3]. They can be used in the field of restorative dentistry for posterior teeth restorations. The bond between the two resin composite materials must be considered to avoid delamination of the restoration [5]
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