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. 2010 Feb;12(1):55-62.
doi: 10.3290/j.jad.a17534.

Benefits of a two-step cementation procedure for prefabricated fiber posts

Leontine A Jongsma  1 , Peter B Bolhuis, Prem Pallav, Albert J Feilzer, Cornelis J Kleverlaan
Affiliations

Benefits of a two-step cementation procedure for prefabricated fiber posts

Leontine A Jongsma et al. J Adhes Dent. 2010 Feb.

Abstract

Purpose: To determine whether two-step cementation of prefabricated fiber posts leads to higher bond strengths.

Materials and methods: Forty-eight human canine teeth were divided into six groups and fiber posts were cemented with DC Core, RelyX Unicem and Panavia F2.0, according to a one-step or two-step procedure. Per root, four cross-sections were prepared. The differences in push-out strength between procedure, cement and location within the root were determined.

Results: For all cements, the push-out strengths for the two-step procedure were significantly higher than for the one-step procedure (p < 0.001). Differences between the cements for both the one-step and two-step procedure were not statistically significant (p = 0.05).

Conclusion: The reduction of the C-factor by means of a two-step cementation, a procedure equivalent to the layering technique of composite restorations, resulted in significantly higher bond strengths. The increase of 60% in bond strength may be beneficial to the retention of post and core restorations.

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