title: [The influence of methacryloxy propyl trimethoxyl silane on shear bond strength of three kinds metal and Filtek resin].
abstract: OBJECTIVE
  To study the influence of three different metal alloy surfaces treated with primer methacryloxy propyl trimethoxyl silane (gamma-MPS) coupling agent on the bond strength of Filtek Z350 resin.
  
  
  METHODS
  Total 36 specimens of nickel-chromium(Ni-Cr) alloy, pure titanium(Ti) and aurum-palladium(Au-Pd) alloy, each of 12 pieces produced by lost wax casting method, were divided into 6 groups. After treated with gamma-MPS on the bonding surface, experimental group samples were adhered to Filtek Z350 resin, then compared with the surface without gamma-MPS treatment. The tensile and shear strength of each group tested and the fracture sections were observed with scanning electron microscope (SEM).
  
  
  RESULTS
  Comparing the Ni-Cr alloy and pure Ti experimental group with them in control group, the shearing strength of the experimental group was higher, and the differences were significant (P < 0.001). The shearing strength of the experimental group and control group of Au-Pd alloy were not significant (P > 0.05). Comparing the experimental groups, the shearing strength of pure Ti was higher than Ni-Cr alloy, both were higher than Au-Pd alloy (P < 0.01). These entire specimens were adhesive fracture. Comparing with the control group, Ni-Cr alloy and pure Ti experimental group showed more resin juts in the fracture surface, while the Au-Pd alloy in experimental group showed less resin juts.
  
  
  CONCLUSIONS
  gamma-MPS can enhance the adhesion between metal and resin, but it is also related to the metal composition. gamma-MPS can significantly increase the bond strength of resin and Ti or Ni-Cr alloy, but not the case of Au-Pd alloy and resin.
authors.affiliation: Dept. of Prosthodontics, The Affiliated Stomatology Hospital of Nanchang University, Nanchang 330006, China.
authors.forename: Jianhong
authors.initials: J
authors.lastname: Wang
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
authors.forename: Fubao
authors.initials: F
authors.lastname: Zhang
authors.forename: Lianshui
authors.initials: L
authors.lastname: Shi
authors.forename: Hongshui
authors.initials: H
authors.lastname: Zhu
mesh_terms: D002858:Chromium Alloys; D003188:Composite Resins; D003722:Dental Alloys; D001840:Dental Bonding; D008422:Materials Testing; D033081:Shear Strength; D012821:Silanes; D013499:Surface Properties; D014025:Titanium
chemical_list: D002858:Chromium Alloys; D003188:Composite Resins; D003722:Dental Alloys; D012821:Silanes; C533204:filtek Z350; C066018:nichrome; D014025:Titanium