title: Comparison of shear bond strength of hydrophilic bonding materials: an in vitro study.
abstract: OBJECTIVE
  The aim of this study was to evaluate and compare the shear bond strength of hydrophilic materials like Transbond MIP with Assure-fluoride releasing light cure sealant paste system (Reliance orthodontic product), Enhance Lc-adhesion booster (Reliance Orthodontics) Prime and Bond NT-one step adhesive with nanotechnology (Dentsply Product India) with Transbond XT as the control group.
  
  
  METHODS
  The study was conducted on 180 extracted human premolar teeth which were divided into five main groups. Each group contained 36 teeth, which were further subdivided into three subgroups containing 12 teeth. The teeth were bonded in three different surface environments namely dry, contaminated with artificial saliva and reprimed after contamination with artificial salvia. The brackets were bonded and cured. The shear bond strength was tested using Instron universal testing machine (4501).
  
  
  RESULTS
  The results were subjected to statistical analysis like 3 factorial ANOVA and compared to post-hoc using the Student Newman levels test. The residual resin on the tooth surface after debonding was evaluated with adhesive remnant index.
  
  
  CONCLUSIONS
  The results revealed that in situations in which moisture contamination is critical there is distinct advantage in using hydrophilic primers.
authors.affiliation: Department of Orthodontics and Dentofacial Orthopedics, Karpaga Vinayaga College of Dental Sciences, Kodambakkam, Chennai, Tamil Nadu, India. niruortho6@yahoo.com
authors.forename: C
authors.initials: C
authors.lastname: Nirupama
authors.forename: Sarasa
authors.initials: S
authors.lastname: Kavitha
authors.forename: Josy
authors.initials: J
authors.lastname: Jacob
authors.forename: K
authors.initials: K
authors.lastname: Balaji
authors.forename: B
authors.initials: B
authors.lastname: Srinivasan
authors.forename: Ramakrishnan
authors.initials: R
authors.lastname: Murugesan
authors.forename: N R
authors.initials: NR
authors.lastname: Krishnaswamy
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000268:Adhesiveness; D000269:Adhesives / Q000737:chemistry; D001641:Bicuspid; D020770:Compomers / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003777:Dental Prophylaxis / Q000295:instrumentation; D003799:Dental Stress Analysis / Q000295:instrumentation; D000431:Ethanol / Q000737:chemistry; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D016382:Orthodontic Appliance Design; D016910:Orthodontic Brackets; D010756:Phosphoric Acids / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D033081:Shear Strength; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D000269:Adhesives; C438705:Assure cement; D020770:Compomers; D003738:Dental Cements; C414342:Enhance LC; D008689:Methacrylates; D010756:Phosphoric Acids; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; D012464:Saliva, Artificial; C477790:Transbond XT; C458821:Transbond moisture-insensitive primer; D000431:Ethanol; C030242:phosphoric acid