title: Pre-treatment of radicular dentin by self-etch primer containing chlorhexidine can improve fiber post bond durability.
abstract: We evaluated whether the pre-treatment of radicular dentin by ED Primer containing different concentrations of chlorhexidine can improve the bond durability of fiber post to radicular dentin. Experimental ED primers containing different concentrations of chlorhexidine (0%, 0.5% and 1.0%) were prepared. Thirty extracted maxillary anterior teeth were divided into 3 groups, each group corresponding to different chlorhexidine concentrations. Fiber posts were cemented in endodontically treated teeth with experimental ED primers and Panavia F. The bonded teeth were transversally sectioned into six slices and then were processed for thin slice push-out test 24 h later or after 18-months water storage. Eighteen-month storage resulted in significant bond strength reduction of all groups (p<0.05). The bond strength reduction of 1.0% group was significantly lower than that of control group and 0.5% group (p<0.05). In conclusion, the incorporation of 1.0% chlorhexidine into ED primer can extend the bond longevity of fiber post to radicular dentin.
authors.affiliation: Department of Prosthodontics, Peking University School and Hospital of Stomatology, Haidian District, Beijing, P R of China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhou
authors.forename: Xu
authors.initials: X
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Chen
authors.forename: Xiaoqiang
authors.initials: X
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Ma
authors.forename: Jianguo
authors.initials: J
authors.lastname: Tan
mesh_terms: D000268:Adhesiveness; D002484:Cementation / Q000379:methods; D002710:Chlorhexidine / Q000031:analogs & derivatives* / Q000737:chemistry; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005898:Glass / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry*; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D019553:Tooth, Nonvital / Q000628:therapy; D014867:Water / Q000737:chemistry
chemical_list: D003764:Dental Materials; D017220:Dentin-Bonding Agents; C500742:ED Primer II; D008689:Methacrylates; C438843:Panavia-Fluoro; D019279:Resin Cements; C009753:fiberglass; D014867:Water; C010882:chlorhexidine gluconate; D002710:Chlorhexidine