AIM: To compare by means of a push-out test the interfacial strength of a dual-curing resin cement and a light-curing self-adhering resin composite when used in translucent fibre post cementation. METHODOLOGY: Thirty-four extracted human premolars with single canals were selected and root filled. Translucent fibre posts (RelyX Fiber Post) were luted into the root canal using two resinous luting systems (n = 17). Dual-Curing Technique (DC): the specimens were treated with Excite DSC and RelyX ARC, which were light-cured simultaneously through the post for 60 s. Light-Curing Self-Adhering Technique (LCSA): the specimens were treated with Vertise Flow, which was light-cured through the post for 60 s. The specimens were sectioned transversally into six slices to perform the push-out test at the coronal, middle and apical regions of the root canals. Data were analysed by two-way anova. All specimens were analysed by stereomicroscopy and SEM to determine fracture patterns. RESULTS: There were no significant differences between the DC and LCSA techniques (P = 0.703) in any of the canal regions. Root region was not a significant factor for push-out values (P = 0.255) and group-region interactions were not significant (P = 0.740). For the DC technique, the majority of the fracture patterns (73.3%) were adhesive at the interface between dual-curing resin cement and adhesive. For the LCSA technique, the majority of the fracture patterns (71.7%) were adhesive at the interface between light-curing self-adhering resin composite and dentine. CONCLUSIONS: The interfacial strength between light-curing self-adhering resin composite and root canal walls is equivalent to the interfacial strength between dual-curing cement and root canal walls.
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|Titolo:||push-out strenght of translucent fibre posts cemented using a dual curing technique or a light-curing self-adhering material|
|Citazione:||Giachetti, L., Scaminaci Russo, D., Baldini, M., Bertini, F., Steier, L., & Ferrari, M. (2012). push-out strenght of translucent fibre posts cemented using a dual curing technique or a light-curing self-adhering material. INTERNATIONAL ENDODONTIC JOURNAL, 45(3), 249-256.|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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