Objective: this study was designed to evaluate the adhesive systems application mode in bond strength and degree of conversion after cementation of fiber glass post within the root canal dentin.
Materials and methods: the roots of 44 premolars were undergone root canal treatment and then divided into four subgroups (n=11), according to the mode of adhesive application (manual active, manual passive) and the cementation system (Adper Single Bond 2/RelyX ARC in etch-and-rinse strategy and Single Bond Universal/RelyX Ultimate in self-etch strategy. In each group, seven roots were randomly evaluated by push-out Bond Strength test; four roots were evaluated in micro-Raman spectroscopy for Degree of Conversion.
Results: For both cementation systems, the highest Bond Strength values (MPa) were observed with manual active application mode and Single Bond Universal/ RelyX Ultimate in self-etch strategy performed better than other type.
Conclusion: The highest bond strength value was observed to the active application mode especially with Single Bond Universal/RelyX Ultimate in self-etch strategy at the coronal root third.
Ahmed Mohamed Elmarakby, Ahmed H Labib
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