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. 2013 Nov;38(4):234-40.
doi: 10.5395/rde.2013.38.4.234. Epub 2013 Nov 12.

Effects of dentin moisture on the push-out bond strength of a fiber post luted with different self-adhesive resin cements

Sevinç Aktemur Türker  1 , Emel Uzunoğlu, Zeliha Yılmaz
Affiliations

Effects of dentin moisture on the push-out bond strength of a fiber post luted with different self-adhesive resin cements

Sevinç Aktemur Türker et al. Restor Dent Endod. 2013 Nov.

Abstract

Objectives: This study evaluated the effects of intraradicular moisture on the pushout bond strength of a fibre post luted with several self-adhesive resin cements.

Materials and methods: ENDODONTICALLY TREATED ROOT CANALS WERE TREATED WITH ONE OF THREE LUTING CEMENTS: (1) RelyX U100, (2) Clearfil SA, and (3) G-Cem. Roots were then divided into four subgroups according to the moisture condition tested: (I) dry: excess water removed with paper points followed by dehydration with 95% ethanol, (II) normal moisture: canals blot-dried with paper points until appearing dry, (III) moist: canals dried by low vacuum using a Luer adapter, and (IV) wet: canals remained totally flooded. Two 1-mm-thick slices were obtained from each root sample and bond strength was measured using a push-out test setup. The data were analysed using a two-way analysis of variance and the Bonferroni post hoc test with p = 0.05.

Results: Statistical analysis demonstrated that moisture levels had a significant effect on the bond strength of luting cements (p < 0.05), with the exception of G-Cem. RelyX U100 displayed the highest bond strength under moist conditions (III). Clearfil SA had the highest bond strength under normal moisture conditions (II). Statistical ranking of bond strength values was as follows: RelyX U100 > Clearfil SA > G-Cem.

Conclusions: The degree of residual moisture significantly affected the adhesion of luting cements to radicular dentine.

Keywords: Dentine moisture; Push-out; Self-adhesive resin cement.

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Conflict of interest statement

No potential conflict of interest relevant to this article was reported.

Figures

Figure 1
Figure 1
Push-out bond strengths (MPa) of self adhesive cements with respect to the experimental moisture conditions.
See this image and copyright information in PMC

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