title: The effect of an erbium, chromium: yttrium-scandium-gallium-garnet laser on the microleakage and bond strength of silorane and micro-hybrid composite restorations.
abstract: OBJECTIVE
  The aim of this in vitro study was to compare the microleakage and bond strength of Class V silorane-based and universal micro-hybrid composite restorations prepared either with diamond bur or with an erbium, chromium: yttrium-scandium-gallium-garnet (Er, Cr:YSGG) laser.
  
  
  METHODS
  A total of 160 molar teeth were used for microleakage assessment and shear bond strength (SBS) test. The specimens were prepared using either diamond bur or 3 W-, 4 W- and 5 W-20 Hz Er, Cr:YSGG laser irradiation. All specimens were subjected to thermocycling (500 times at 5 ± 2°C to 55 ± 2°C, dwell time 15 s and transfer time 10 s). Microleakage was assessed using a 0.5% basic-fuchsin solution. The bond strengths were determined using a microtensile tester at a crosshead speed of 0.5 mm/min. The Kruskal Wallis test was used for the analysis of microleakage and a one-way analysis of variance test was used to analyze the SBS (P < 0.05).
  
  
  RESULTS
  No statistically significant differences were found (P > 0.05) between Er, Cr:YSGG laser and bur preparation methods regarding microleakage and bond strength values.
  
  
  CONCLUSIONS
  Irradiation with Er, Cr:YSGG laser was confirmed to be as effective as conventional methods for preparing cavities before adhesive restorations.
authors: Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye.
authors: Fatih Mehmet
authors: FM
authors: Korkmaz
authors: Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye.
authors: Ozgul
authors: O
authors: Baygin
authors: Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye.
authors: Tamer
authors: T
authors: Tuzuner
authors: Department of Prosthodontics, Faculty of Dentistry, Izmir Katip Çelebi University, Izmir, Turkiye.
authors: Bora
authors: B
authors: Bagis
authors: Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye.
authors: Ipek
authors: I
authors: Arslan
keywords: Diamond bur; chromium: yttrium-scandium-gallium-garnet laser; erbium; micro-hybrid composite; silorane