title: Effect of novel restoration techniques on the fracture resistance of teeth treated endodontically: An in vitro study.
abstract: The aim was to evaluate the effects of fiber-reinforced composite restorations and a bulk-fill resin composite on the fracture strength of mandibular premolars treated endodontically. Standard mesio-occluso-distal (MOD) cavities were prepared in 48 mandibular premolars. Following root canal treatment, teeth were assigned to four groups: Group 1, nano-hybrid resin composite; Group 2, polyethylene woven fiber plus nano-hybrid resin composite; Group 3, short fiber-reinforced resin composite plus nano-hybrid resin composite; and Group 4, bulk-fill resin composite plus nano-hybrid resin composite. Then, the teeth were subjected to the fracture toughness test. The data were analyzed statistically using one-way ANOVA, followed by Tukey's post-hoc test. The fiber-reinforced groups had better results than the nano-hybrid and bulk-fill composites (p<0.05), while the bulk-fill and nano-hybrid composite restorations gave similar results (p>0.05). Fiber-reinforcement improved the fracture strength of teeth with large MOD cavities treated endodontically. Bulk-fill composites can be used reliably as well as nano-hybrid composites.
authors.affiliation: Ege University, Faculty of Dentistry, Department of Restorative Dentistry.
authors.forename: Hande
authors.initials: H
authors.lastname: Kemaloglu
authors.forename: Mehmet
authors.initials: M
authors.lastname: Emin Kaval
authors.forename: Murat
authors.initials: M
authors.lastname: Turkun
authors.forename: Seniha
authors.initials: S
authors.lastname: Micoogullari Kurt
mesh_terms: D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods* / Q000706:statistics & numerical data*; D006801:Humans; D011095:Polyethylenes / Q000737:chemistry; D014082:Tooth Fractures / Q000517:prevention & control*; D019553:Tooth, Nonvital / Q000601:surgery*
chemical_list: D003188:Composite Resins; D011095:Polyethylenes