title: Effect of application time of colloidal platinum nanoparticles on the microtensile bond strength to dentin.
abstract: The purpose of this study was to investigate the effect of application time of colloidal platinum nanoparticles (CPN) on bond strength. Dentin surfaces were subjected to one of the following treatments: (A) Etching with 10% citric acid-3% FeCl(3 )solution (10-3 solution); (B) Etching with 10-3 solution followed by applying CPN as a primer solution for 10, 20, 30, or 60 seconds; and (C) Priming with CPN for 10, 20, 30, or 60 seconds followed by etching with 10-3 solution. An acrylic rod was bonded to each treated dentin surface using 4-META/MMA-TBB resin. Bonded specimens were sectioned into beams for microtensile bond strength testing. In groups (B) and (C), highest bond strength was obtained when dentin surfaces were treated with CPN for 30 seconds. This meant that the CPN primer solution either enhanced the penetration of resin into dentin or the degree of conversion of 4-META/MMA-TBB resin. Within the limitations of this study, treatment with 0.1 mN CPN primer solution followed by 20 seconds of water rinsing resulted in high bond strength.
authors.affiliation: Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan. hoshika@den.hokudai.ac.jp
authors.forename: Shuhei
authors.initials: S
authors.lastname: Hoshika
authors.forename: Futami
authors.initials: F
authors.lastname: Nagano
authors.forename: Toru
authors.initials: T
authors.lastname: Tanaka
authors.forename: Takatsumi
authors.initials: T
authors.lastname: Ikeda
authors.forename: Takahiro
authors.initials: T
authors.lastname: Wada
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Asakura
authors.forename: Kenichi
authors.initials: K
authors.lastname: Koshiro
authors.forename: Denis
authors.initials: D
authors.lastname: Selimovic
authors.forename: Yusei
authors.initials: Y
authors.lastname: Miyamoto
authors.forename: S K
authors.initials: SK
authors.lastname: Sidhu
authors.forename: Hidehiko
authors.initials: H
authors.lastname: Sano
mesh_terms: D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry; D019343:Citric Acid / Q000737:chemistry; D003102:Colloids; D001840:Dental Bonding; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure*; D005290:Ferric Compounds / Q000737:chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D010984:Platinum / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D000180:Acrylic Resins; D001896:Boron Compounds; D002712:Chlorides; D003102:Colloids; D005290:Ferric Compounds; D008689:Methacrylates; D008768:Methylmethacrylates; D019279:Resin Cements; D014867:Water; D019343:Citric Acid; D010984:Platinum; C049495:Super-bond; C024555:ferric chloride