title: Influence of polymerisation method and type of fibre on fracture strength of endodontically treated teeth.
abstract: The aim of this study was to investigate (i) the effect of direct or indirect polymerisation of adhesive-impregnated ribbon fibre under 4-mm bulk-filled composites on fracture strength; (ii) to compare polyethylene ribbon fibre-reinforcement composites with short fibre-reinforced composite; and (iii) the effectiveness of polyethylene ribbon fibre according to the restorative materials used (low-viscous bulk-fill composite, high-viscous flowable composite or conventional paste composite). Seventy molars were divided into seven groups; (groups 1-2) Ribbond-reinforced Surefil-SDR; (group 3) Ribbond-reinforced G Aenial Flo; (group 4) Ribbond-reinforced G Aenial Posterior; (group 5) short fibre-reinforced composite everX Posterior; (group 6) unfilled cavity; (group 7) intact teeth. Ribbond was adopted to cavity walls by impregnating an adhesive and using a flowable composite. In group 1, adhesive-impregnated Ribbond was polymerised directly using a light-curing-unit, and indirectly in group 2 under 4-mm bulk-filled composite. Direct or indirect polymerisation of adhesive impregnated ribbon fibre under 4-mm bulk-filled composite did not change the fracture strength results. Polyethylene ribbon fibre-reinforced groups (groups 1-4) and short fibre-reinforced composite group (group 5) displayed similar results. Polyethylene ribbon fibre can be used safely under 4-mm bulk-filled composites. Ribbond-reinforced low-viscous bulk-fill, high-viscous flowable, and conventional paste composite exhibited similar fracture strength results.
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Kocaeli University, Kocaeli, Turkey.
authors.forename: Neslihan
authors.initials: N
authors.lastname: Tekçe
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Kansad
authors.initials: K
authors.lastname: Pala
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.
authors.forename: Safa
authors.initials: S
authors.lastname: Tuncer
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Demirci
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Kocaeli University, Kocaeli, Turkey.
authors.forename: Merve Efe
authors.initials: ME
authors.lastname: Serim
mesh_terms: D003188:Composite Resins; D003764:Dental Materials / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods; D003799:Dental Stress Analysis; D000077298:Flexural Strength; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008963:Molar / Q000473:pathology / Q000648:ultrastructure; D011095:Polyethylenes; D012390:Root Canal Therapy / Q000379:methods; D014082:Tooth Fractures / Q000473:pathology / Q000503:physiopathology*; D019553:Tooth, Nonvital / Q000503:physiopathology*
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C000618653:EverX Posterior; D011095:Polyethylenes; C084063:RIBBOND; C111840:flowable hybrid composite
keywords: polyethylene ribbon fibre reinforced composite; short fibre reinforced composite