Push-out strength of translucent fibre posts cemented using a dual-curing technique or a light-curing self-adhering material
| Autor: | L, Giachetti, D, Scaminaci Russo, M, Baldini, F, Bertini, L, Steier, M, Ferrari |
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| Rok vydání: | 2011 |
| Předmět: |
Dental Stress Analysis
Self-Curing of Dental Resins Surface Properties Adhesiveness Composite Resins Polyethylene Glycols Resin Cements Acid Etching Dental Acrylates Polymethacrylic Acids Tooth Apex Dentin-Bonding Agents Dentin Materials Testing Microscopy Electron Scanning Humans Methacrylates Bisphenol A-Glycidyl Methacrylate Phosphoric Acids Stress Mechanical Dental Pulp Cavity Cementation Root Canal Preparation Light-Curing of Dental Adhesives Post and Core Technique |
| Zdroj: | International endodontic journal. 45(3) |
| ISSN: | 1365-2591 |
| Popis: | 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.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.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.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. |
| Databáze: | OpenAIRE |
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