title: Efficacy of different treatments of root canal walls on the pull-out bond strength of the fiber posts.
abstract: The aim of this study was to evaluate the efficacy of different irrigation protocols, including laser, on the retention of the fiber-reinforced composite posts to root canal dentinal walls using pull-out tests. Root canals of 60 single-rooted human teeth were filled and post spaces were prepared. Finally, specimens were divided randomly into five groups, each consisting of 12 specimens as follows: 5% NaOCl (control group), 17% EDTA, ultrasonic with 17% EDTA, single 1.5-W Er:YAG laser application, and the combined use of Er:YAG laser and 17% EDTA. After the root canal procedures, fiber posts were cemented to the root canal. Pull-out tests were performed using a universal testing machine at a crosshead speed of 2 mm/min. The data were analyzed using a one-way ANOVA and Bonferroni post hoc test (p = 0.05). Irradiation by the Er:YAG laser with/without EDTA positively affected the pull-out bond strength (p < 0.001). The pull-out strength was significantly higher in the ultrasonic group than that of the single irrigation with NaOCl or EDTA (p < 0.001). Er:YAG laser irradiation with/without EDTA enhanced the bond strength of fiber posts to root canal dentin walls. Additionally, ultrasonic-EDTA combination increased the bond strength.
authors.affiliation: Department of Endodontics, Dental Faculty, Izmir Katip Celebi University, Izmir, 35620, Turkey, hakan.arslan@ikc.edu.tr.
authors.forename: Hakan
authors.initials: H
authors.lastname: Arslan
authors.forename: Cenk Burak
authors.initials: CB
authors.lastname: Yılmaz
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Karatas
authors.forename: Cagatay
authors.initials: C
authors.lastname: Barutcigil
authors.forename: Hüseyin Sinan
authors.initials: HS
authors.lastname: Topcuoglu
authors.forename: Kübra Yesildal
authors.initials: KY
authors.lastname: Yeter
mesh_terms: D001696:Biomechanical Phenomena; D001840:Dental Bonding; D003782:Dental Pulp / Q000503:physiopathology*; D006801:Humans; D053844:Lasers, Solid-State; D011176:Post and Core Technique; D012390:Root Canal Therapy / Q000379:methods*; D017211:Treatment Failure