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Effect of immediate and delayed post space preparation time on bond strength of the self-adhesive and self-etch adhesive cements

Author(s): Ali Riza Tuncdemi, Cihan Yildirim, Erhan Ozcan,Muhammet Yalcin, Fatma Guller

Purpose: The purpose of this study was to evaluate the effect of immediate and delayed post space preparation time on the bond strength of self-etch and self-adhesive cements. Methods: The teeth were divided into two experimental groups (n=15) according to different post space preparation time either immediate or delayed. Each group was further divided into three subgroups of five teeth each (n=5), according to the type of cements. Results: Three-way ANOVA and Tukey’s Honestly significant difference test were used to evaluate the results (p=0. 05). With respect to the bond strength of the cements according to root region: push out scores of the coronal part were higher than the apical and middle parts (p<0.05). Conclusion: Delayed push out scores were higher than immediate group forMultilinkAutomix, according to time. In terms of the adhesive systems individually, the bond strengths of the two self-etch adhesive cement bond strengths (Multilink Automix and Panavia F) were higher than the selfadhesive cement (Maxcem Elite). Delayed or immediate post space preparation time may be important for some cements’ bond strength on the other hand it may may not be important for others. Therefore, post space preparation time should be determined according to cement type.

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