title: Twenty-four hour bond strength between layers of a highly loaded indirect composite.
abstract: This study evaluated the repair bond strength of Estenia composite. Disk specimens of a dentin material were conditioned with varying combinations of silane primer (Add-on Primer, Clearfil Porcelain Bond Activator, Clearfil Porcelain Bond Activator + Clearfil Mega Bond-Primer, Porcelain Liner M, and unprimed) and bonding agent (Clearfil Mega Bond-Bond, Modeling Liquid, Stain Diluent, and no bonding agent). After photopolymerization of the enamel material placed on each surface, the specimens were either wet- or dry-stored at 37 degrees C for 24 hours. Average shear bond strength varied from 24.9 to 61.4 MPa, where the Clearfil Porcelain Bond Activator + Clearfil Mega Bond-Bond group and the Add-on Primer + Modeling Liquid group showed the greatest bond strength for dry and wet conditions respectively. To achieve reliable bond strength between layers of Estenia composite, it is highly recommended to use specific combinations of silane primer and bonding agent.
authors.affiliation: Department of Specialized Dentistry, Nagasaki University Hospital of Medicine and Dentistry, 1-7-1, Sakamoto, Nagasaki 852-8588, Japan.
authors.forename: Noriko
authors.initials: N
authors.lastname: Hisamatsu
authors.forename: Naomi
authors.initials: N
authors.lastname: Tanoue
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Yanagida
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Atsuta
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsumura
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D017269:Dental Prosthesis Repair; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D033081:Shear Strength; D012821:Silanes / Q000737:chemistry; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: C076805:Clearfil Porcelain Bond; D003188:Composite Resins; D003738:Dental Cements; D003764:Dental Materials; C095452:Megabond; D008689:Methacrylates; D011140:Polyurethanes; D012821:Silanes; C091839:urethanetrimethacrylate; D014867:Water