Effect of Fiber Post-Resin Matrix Composition on Bond Strength of Post-Cement Interface

Figure 9

Failure mode type 5 demonstrating a mixed type failure where resin cement (1) covers 25–50% of the post surface (2) following bond strength test. (a) Lateral view of the simulated acrylic resin canal with resin cement (3). (b) Lateral view of the corresponding failed fiber post (4) where cement covers one segment (25%) of the post. (c) Lateral view of the same fiber post where no cement covers the other segments of the post. Pictures were taken under stereomicroscope at 35X magnification.