title: Effect of light-cured filled sealant on the shear bond strength of metal, ceramic and titanium brackets bonded with resin-modified glass ionomer cement.
abstract: BACKGROUND
  The purpose of this study was to evaluate the effect of a highly filled light-cured sealant (HFLCS) on the shear bond strength of metal, ceramic and titanium brackets bonded with resin-modified glass ionomer cement (RMGIC).
  
  
  METHODS
  A total of 60 freshly extracted maxillary premolars were randomly divided into six groups (10 in each group). In all groups, the teeth were etched with 37% phosphoric acid for 20 s and RMGIC (Fuji Ortho LC, GC Europe) was used for bracket bonding. Group 1: Titanium brackets were bonded directly to etched enamel surfaces. Group 2: Titanium brackets were bonded to etched enamel surfaces covered with HFLCS (Pro Seal, Reliance Orthodontic Products, Itasca, IL, USA). Group 3: Metal brackets were bonded directly to etched enamel surfaces. Group 4: Metal brackets were bonded to etched enamel surfaces covered with HFLCS. Group 5: Ceramic brackets were bonded directly to etched enamel surfaces. Group 6: Ceramic brackets were bonded to etched enamel surfaces covered with HFLCS. The specimens were tested in shear mode with a universal testing machine. After debonding, the teeth and the brackets were examined under a scanning electron microscope. Univariate analysis of variance (analysis) was performed to test the main effects of bracket type and HFLCS.
  
  
  CONCLUSIONS
  The effect of HFLCS on etched enamel surfaces did not affect the bond strength values and bond failure modes of metal, ceramic and Titanium brackets bonded with RMGIC.
authors.affiliation: Departments of Orthodontics and Dentofacial Orthopaedics, Himachal Dental College, Sundernagar, District Mandi, Himachal Pradesh, India.
authors.forename: Vivek
authors.initials: V
authors.lastname: Mahajan
mesh_terms: D002516:Ceramics; D055117:Curing Lights, Dental; D005899:Glass Ionomer Cements; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010895:Pit and Fissure Sealants; D014025:Titanium / Q000737:chemistry*
chemical_list: D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; D014025:Titanium