Objectives: This study was to evaluate the flexure strength of three composites [Spectrum TPH (Dentsply, UK); Filtek Z250 (3M Dental Products, USA) and Aelitefil (Bisco Company, USA)] and two amalgams [Permite C (SDI, Australia) and Silverfil (Dunia Perwira Sdn Bhd, Malaysia)] as the controls. Methods: 15 specimens for each material were prepared with the size of 2 x 2 x 25mm. The specimens were immersed in the distilled water and incubated in incubator at 37ºC for one week before test. The test conducted using the 3-point bend test method. ANOVA and Scheffé test were used for statistical analysis in this study. Results: There were no significant differences (p<0.05) in flexural strength between Spectrum TPH and Aelitefil. However, both Spectrum TPH and Aelitefil are significantly (p<0.05) stronger than Filtek Z250. All of the composites have a significant (p<0.05) higher flexural strength than amalgams. Silverfil, a new product showed the lowest (p<0.05) flexural strength among the materials. Conclusions: Spectrum TPH and Aelitefil were the strongest dental composites. Composites have better flexure strength than amalgam. This means that composite has sufficient strength in the posterior teeth restoration, as an alternative to amalgam. However, dental composite still need some improvements in other aspects. The newly manufactured amalgam, Silverfil showed its weakness and need further investigation for its mechanical properties.