title: Effect of NaOCl treatment on bond strength between indirect resin core-buildup and dentin.
abstract: The aim of this study was to investigate the bond strength between indirect resin core-buildup and dentin treated with or without hypochlorite (NaOCl) gel. The post-space was made in five extracted human molars with obturated root canals, and the indirect resin core was produced on a gypsum model. Then, the dentin surface was treated with/without NaOCl, followed by luting of the resin core into the cavity. After storage for 24 h in 37 degrees C water, the specimens were sectioned for measuring bond strength to the root and coronal dentin, and were subjected to micro-tensile bond strength (MTBS) testing. Two-way ANOVA showed that significant differences in MTBS were revealed for both factors of NaOCl treatment and dentin region. It is concluded that, for indirect resin core-buildup, the proper use of the NaOCl gel to dentin could increase the bond strength.
authors.affiliation: Division for General Dentistry, Hokkaido University Dental Hospital, Department of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Kita 13 Nishi 7, Kita-ku, Sapporo 060-8586, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Inoue
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Murata
authors.forename: Hidehiko
authors.initials: H
authors.lastname: Sano
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Kashiwada
mesh_terms: D000134:Acid Etching, Dental; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D008963:Molar; D016877:Oxidants / Q000737:chemistry*; D010756:Phosphoric Acids / Q000737:chemistry; D011176:Post and Core Technique; D019279:Resin Cements / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D019553:Tooth, Nonvital / Q000473:pathology; D014867:Water / Q000737:chemistry
chemical_list: C469237:Clearfil Core; C112274:Clearfil Liner Bond 2; D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D016877:Oxidants; C438843:Panavia-Fluoro; D010756:Phosphoric Acids; D019279:Resin Cements; D012388:Root Canal Irrigants; D012821:Silanes; D014867:Water; D012973:Sodium Hypochlorite