Effects of Agitation Technique of One-step Self-etch Adhesives on Push-out Bond Strength of Resin Cements in Root Canal
The purpose of this study was to evaluate push-out bond strength of resin cement used with one-step self-etch adhesive systems applied with agitation on the root canal dentin. Forty human mandibular premolar teeth were used in this study. Roots canal were prepared for luting fiber posts and randomly divided into 4 groups of 10 each. Two different resin cements (PanaviaTM V5 and Multilink® N) were used to fix fiber posts in root canal in combination with corresponding adhesives applied passively or with agitation techniques. Twenty-four hours after cementation, each root was sectioned into 6 pieces, each 1 mm. thick, representing cervical, middle, apical regions. Push-out bond strength tests were used to measure regional bond strength. Passive application demonstrated a higher mean bond strength compared with agitation in the groups using PanaviaTM V5. However, no significant differences of the mean bond strength were observed between regional roots in the PanaviaTM V5 groups. There was no significant difference between the two application techniques when Multilink® N was used. The mean bond strength value was significantly higher in the apical than in the cervical regions in Multilink® N groups regardless of application techniques. In conclusion, Agitation technique used with one-step self-etch adhesive systems could not improve bond strength in root canal
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