title: Bond strength of fiber posts after the application of erbium:yttrium-aluminum-garnet laser treatment and gaseous ozone to the root canal.
abstract: The aim of the present study was to investigate the effects of antibacterial agents (erbium:yttrium-aluminum-garnet [Er:YAG] laser or gaseous ozone) intended to disinfect root canals on bond strengths of fiber posts compared with canals that were finally irrigated using chlorhexidine (CHX). One hundred forty-four human anterior teeth were divided into three groups (n = 48); root canal instrumentation was performed, and antimicrobial pretreatment was conducted as follows: control group: CHX, group 2: Er:YAG laser, and group 3: gaseous ozone. In all groups, fiber posts were inserted using Panavia F 2.0 (Kuraray, Osaka, Japan), Variolink II (Ivoclar Vivadent, Schaan, Liechtenstein), RelyX Unicem (3M Espe; Seefeld, Germany), or Ketac Cem (3M Espe) (n = 12 each). Push-out bond strengths to root canal dentin were affected by the type of luting agent but not by the antimicrobial pretreatment regimen. However, significant interactions between the luting agent and pretreatment could be observed, and adhesion of the self-adhesive resin cement RelyX Unicem was significantly reduced after using gaseous ozone.
authors.affiliation: Department of Operative Dentistry and Periodontology, University School of Dental Medicine, CharitéCentrum 3, Charité-Universitätsmedizin Berlin, Berlin, Germany. kerstin.bitter@charite.de
authors.forename: Kerstin
authors.initials: K
authors.lastname: Bitter
authors.forename: Jörn
authors.initials: J
authors.lastname: Noetzel
authors.forename: Claudia
authors.initials: C
authors.lastname: Volk
authors.forename: Konrad
authors.initials: K
authors.lastname: Neumann
authors.forename: Andrej Michael
authors.initials: AM
authors.lastname: Kielbassa
mesh_terms: D000704:Analysis of Variance; D000891:Anti-Infective Agents, Local; D002710:Chlorhexidine; D001840:Dental Bonding; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D006801:Humans; D007180:Incisor; D053844:Lasers, Solid-State; D010126:Ozone; D011176:Post and Core Technique; D019279:Resin Cements; D012388:Root Canal Irrigants; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods*; D018709:Statistics, Nonparametric
chemical_list: D000891:Anti-Infective Agents, Local; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012388:Root Canal Irrigants; D010126:Ozone; D002710:Chlorhexidine