title: Nanoleakage: leakage within the hybrid layer.
abstract: Most microleakage studies involve quantitating the magnitude of movement of a tracer molecule through a gap between restorative materials and the wall of cavity preparations. The present microscopic study examined the migration of silver nitrate into the interface between dentin and five different dentin bonding agents used to restore class 5 cavities, in the absence of gap formation. Several different leakage patterns were seen, but they all indicated leakage within the hybrid layer when viewed by SEM. The ranking of microleakage from most to least was: All-Bond 2 > Suberbond C&B > Scotchbond Multi-Purpose > Clearfil Liner Bond System > Kuraray Experimental System, KB-200. To distinguish this special type of microleakage within the basal, porous region of the hybrid layer in the absence of gap formation, we propose the term nanoleakage.
authors.affiliation: Department of Operative Dentistry, Tokyo Medical and Dental University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Sano
authors.forename: T
authors.initials: T
authors.lastname: Takatsu
authors.forename: B
authors.initials: B
authors.lastname: Ciucchi
authors.forename: J A
authors.initials: JA
authors.lastname: Horner
authors.forename: W G
authors.initials: WG
authors.lastname: Matthews
authors.forename: D H
authors.initials: DH
authors.lastname: Pashley
mesh_terms: D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003763:Dental Leakage / Q000145:classification; D018772:Dental Marginal Adaptation; D003804:Dentin / Q000648:ultrastructure; D003806:Dentin Permeability; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements; D013499:Surface Properties; D009626:Terminology as Topic
chemical_list: C074864:All-Bond system; C084544:Clearfil Linerbond System; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; D017438:Bisphenol A-Glycidyl Methacrylate