Effects of Sonic Application of Adhesives Before Fiber Post Cementation (original) (raw)

Abstract

Objective: This study evaluated the effect of application mode of three simplified etch-and-rinse adhesives on the push-out bond strength (PBS), nanoleakage (NL) and in situ degree of conversion (DC) of fiber posts in the root canal Method: The roots of human premolars were endodontically prepared and divided into six groups according to the combination of the main factors Adhesive (Ambar, Adper Single Bond 2 and XP Bond+self-cure activator) and Application mode (manual or sonic). The posts were cemented and the PBS tested at 0.5 mm/min. The NL was evaluated by SEM after immersion of specimens in 50% silver nitrate. Micro-Raman spectroscopy was used to measure the in situ DC. Data were analyzed by three-way repeated measures ANOVA and Tukey tests (5%). Result: Under manual application, the PBS of the apical and cervical third showed the lowest and highest means respectively. Under sonic application, the PBS values increased significantly mainly in the middle and apical thirds. Under...

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