title: Shear bond strength of two adhesive materials to eroded enamel.
abstract: OBJECTIVE
  To evaluate the bond strength of one etch-and-rinse adhesive system and one resin-modified glass ionomer cement to sound and eroded enamel.
  
  
  METHODS
  Forty-eight bovine incisors were embedded in acrylic resin and ground to obtain flat buccal enamel surfaces. Half of the specimens were submitted to erosion challenge with pH-cycling model (3x/cola drink for 7 days) to induce eroded enamel. After that, all specimens were randomly assigned according to adhesive material: etch-andrinse adhesive system (Adper Single Bond 2 - 3M ESPE, USA) or resin-modified glass ionomer cement (Vitro Fil LC - DFL, Brazil). The shear bond testing was performed after 24 hours water storage (0.5 mm/min). Shear bond strength means were analyzed by two-way ANOVA and Tukey post hoc tests (p < 0.05).
  
  
  RESULTS
  Adper Single Bond 2 showed the highest bond strength value to eroded enamel (p < 0.05), whereas no difference was observed in sound enamel compared with Vitro Fil LC (p > 0.05).
  
  
  CONCLUSIONS
  Bond strength of etch-and-rinse adhesive system increases in eroded enamel, while no difference is verified to resin-modified glass ionomer cement.
  
  
  CONCLUSIONS
  Adhesive materials may be used in eroded enamel without jeopardizing the bonding quality; however it is preferable to use etch-and-rinse adhesive system.
authors.affiliation: PhD Student, Department of Pediatric Dentistry, University of Sao Paulo, Brazil.
authors.forename: Tathiane
authors.initials: T
authors.lastname: Lenzi
authors.forename: Daniela
authors.initials: D
authors.lastname: Hesse
authors.forename: Camila
authors.initials: C
authors.lastname: Guglielmi
authors.forename: Ketlin
authors.initials: K
authors.lastname: Anacleto
authors.forename: Daniela Procida
authors.initials: DP
authors.lastname: Raggio
mesh_terms: D000818:Animals; D002253:Carbonated Beverages / Q000009:adverse effects; D002417:Cattle; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003743:Dental Enamel / Q000648:ultrastructure*; D005899:Glass Ionomer Cements / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D033081:Shear Strength; D013314:Stress, Mechanical; D013997:Time Factors; D014077:Tooth Erosion / Q000473:pathology*; D014867:Water / Q000737:chemistry
chemical_list: C554641:Adper single bond 2; D003738:Dental Cements; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012464:Saliva, Artificial; C577192:Vitrofil LC; D014867:Water