title: Bonding durability of silorane and methacrylate-based resins to enamel.
abstract: OBJECTIVE
  Few studies compared the silorane and mechacrylate based resins bonded to enamel. The aim of this study was to evaluate the bonding durability of silorane and methacrylate-based resins to enamel.
  
  
  METHODS
  Twenty seven molars were divided into G1 Clearfil SE Bond/Filtek Z350; G2 Adper Easy One/Filtek Z350; and G3 P90 Adhesive System/Filtek P90 groups. Following application of adhesive systems, blocks of composites were built, samples were stored in water (24 hours/37 ºC), sectioned (0.8 mm²) and tested in tensile (24 hours and 6 months). Fractures were observed (40×). Bond strength (in MPa) was analysed by MANOVA General Linear Model and Tukey's post-hoc test at 5%. The power test was calculated. The etching pattern was observed.
  
  
  RESULTS
  There were differences for material (P=0.029), storage time (P=0.012) and their interaction (P=0.000). Similar bond strengths were found at 24 h for all. The bond strength of G1 decreased after 6 months. At 6 months, G2 showed higher bond strength than G1 and G3, that were similar. The power-test value was 0.87. Mixed fractures and enamel rods were observed.
  
  
  CONCLUSIONS
  Bond strength varied over time depending on the restorative system.
authors: Dentistry, Restorative Dentistry, University North of Parana, Londrina, Brazil - kissmoura@gmail.com.
authors: S
authors: S
authors: Moura
authors: L
authors: L
authors: Chimentão
authors: C
authors: C
authors: Kléin-Júnior
authors: A
authors: A
authors: Mattos
authors: R
authors: R
authors: Carvalho
authors: R
authors: R
authors: Guiraldo
authors: R
authors: R
authors: Poli-Frederico
authors: W
authors: W
authors: Miranda-Júnior
mesh_terms: D001840:Dental Bonding; D003743:Dental Enamel; D008422:Materials Testing; D008689:Methacrylates; D062047:Silorane Resins; D013997:Time Factors
chemical_list: D008689:Methacrylates; D062047:Silorane Resins