title: Effect of Er:YAG laser on debonding strength of laminate veneers.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the debonding strength of laminate veneers after using erbium-doped: yttrium aluminium garnet (Er:YAG) laser.
  
  
  METHODS
  A total of 60 bovine mandibular incisor teeth were divided into two groups (n = 30). Cylindrical specimens (0.7 mm × 5 mm) were fabricated from Empress II ceramic. Then, they were cemented to incisors using dual-cured resin cement (Variolink II). In the first group, no laser application was performed. The Er:YAG laser was applied on each laminate veneer at the test group for 9 s by using the scanning method. Shear force to remove the laminate veneers were applied with universal testing machine at a crosshead speed of 1 mm/min.
  
  
  RESULTS
  Results of this study exhibited significant differences between the control (27.28 ± 2.24 MPa) and test group (3.44 ± 0.69 MPa) (P < 0.05).
  
  
  CONCLUSIONS
  This study shows that application of Er:YAG laser decreased the bond strength of laminate veneers.
authors: Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
authors: Ufuk
authors: U
authors: Iseri
authors: Department of Orthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
authors: Mehmet Oguz
authors: MO
authors: Oztoprak
authors: Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
authors: Zeynep
authors: Z
authors: Ozkurt
authors: Department of Prosthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
authors: Ender
authors: E
authors: Kazazoglu
authors: Department of Orthodontics, Faculty of Dentistry, Yeditepe University, Istanbul, Turkiye.
authors: Tulin
authors: T
authors: Arun
keywords: Debonding; erbium-doped:yttrium aluminium garnet laser; laminate veneers; scanning method; shear bond strength