The influence of rotating fatigue on the bond strength of zirconia-composite interfaces

H. Mirmohammadi, M.N. Aboushelib, C.J. Kleverlaan, N. de Jager, A.J. Feilzer

    Research output: Contribution to JournalArticleAcademicpeer-review


    To evaluate the effect of cyclic loading on the bond strength of resin composite to zirconia framework material.
    Bar shaped zirconia/composite specimens (2 mm × 2 mm × 25 mm) were prepared using three different resin cements and placed in a four-point bending test setup. The flexure strength (Fs) was calculated by placing the bars (n = 10) fixed between the four supports (at 10 and 20 mm) with the interface centered between the inner rollers and subsequently loaded (1 mm/min crosshead speed) until fracture. Rotating fatigue resistance (RFR) was determined in a rotating bending cantilever test setup (104, 1.2 Hz) with the highest stress located at the interface (n = 20). The RFR was determined by the staircase method and the mean RFR was calculated using logistic regression analysis.
    Resin cement composition had no significant influence on the bond strength value obtained by both Fs (F = 0.6, P ≥ 0.5) and RFR (F = 1.1, P ≥ 0.3) tests. However, after rotating fatigue testing there was a significant reduction in bond strength between 46 and 50% of the three resin cements.
    Zirconia resin bond strength is liable to deterioration under the influence of fatigue.

    Original languageEnglish
    Pages (from-to)627-633
    JournalDental Materials
    Issue number7
    Publication statusPublished - 2010


    Dive into the research topics of 'The influence of rotating fatigue on the bond strength of zirconia-composite interfaces'. Together they form a unique fingerprint.

    Cite this