The Evaluation Of Flexural Strength Of Two Composite Resin Materials

The aim of this study was to evaluate the effect of solutions, times of storage and reinforcement with fiber on the flexural strength of different composite materials.

Method:

Nanofill and nanohybrid composite materials with and without fiber, a glass fiber and polyethylene fiber, were tested in this study. 72 samples (2×2×25 mm³) were prepared as following six groups; Group ECME: everStick Fibre / Clearfil Majesty Esthetics, Group EFU: everStick Fibre / Filtek Ultimate, Group RCME: Ribbond Fibre / Clearfil Majesty Esthetics,Group RFU: Ribbond Fibre / Filtek Ultimate, Group CME: Clearfil Majesty Esthetics, Group FU: Filtek Ultimate. The samples were stored in distilled water and mouthwash and tested after 24 hours and 7 days.

Result: Data were analyzed using analysis of variance and Schefee test. It was found that nanohyrid composite materials in mouthwash for 7 days had the lowest flexural strength (93,25 Mpa). The time of storage and solution were not statistically significant factors affecting on the flexural strength.

Conclusion:

Group everStick Fibre / Clearfil Majesty Esthetics and Group everStick Fibre / Filtek Ultimate were showed higher flexural strength than the other groups. The mean flexural strength values of polyethylene fiber reinforced nanofill composite material were similar to nanohybrid composite material.