title: Wetting ability of single-component self-etching adhesives on enamel and dentin.
abstract: OBJECTIVE
  To assess the contact angle, volume loss and nanoleakeage profile of five one-component self-etching adhesive formulations that differed in their HEMA content, on enamel and dentin.
  
  
  METHODS
  Contact angles of drops from each adhesive system were measured over 40 enamel and dentin flat surfaces. Volumetric changes were measured as well. The adhesives were then applied over repolished surfaces according to manufacturers' recommendations, covered with a microfilled restorative composite and the samples were silver infiltrated and prepared for evaluation in a scanning electron microscope.
  
  
  RESULTS
  On enamel and dentin surfaces, the contact angles decreased with increasing HEMA content. A correlation was observed between contact angle, volume loss and HEMA content on both substrates.
authors.affiliation: Division of Cariology and Endodontology, School of Dentistry, University of Geneva, 19, Rue Barthélemy-Menn, CH-1205 Geneva, Switzerland.
authors.forename: Tissiana
authors.initials: T
authors.lastname: Bortolotto
authors.forename: Marco
authors.initials: M
authors.lastname: Ferrari
authors.forename: Ivo
authors.initials: I
authors.lastname: Krejci
mesh_terms: D003188:Composite Resins / Q000737:chemistry; D003743:Dental Enamel / Q000648:ultrastructure*; D003763:Dental Leakage / Q000145:classification; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes / Q000737:chemistry; D016622:Silver Staining; D013499:Surface Properties; D014783:Viscosity; D017155:Wettability
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D011140:Polyurethanes; C029824:urethane dimethacrylate luting resin; C005044:hydroxyethyl methacrylate; C034139:4-methacryloxyethyltrimellitic acid anhydride