title: Effects of different surface pre-treatments on the bond strength of adhesive resin cement to quartz fiber post.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effect of mechanical and chemical surface treatment methods on the bond strength of resin cement to fiber post.
  
  
  METHODS
  The roots of 36 maxillary central incisor teeth were mounted in auto polymerized acrylic resin blocks (10 × 15 mm) and the root canals were enlarged with the drills of post system (2.1 mm width, 12 mm length). Thirty-six fiber posts were randomly assigned to one of the following surface conditioning methods: silane coupling agent, methylene chloride etching, 24% hydrogen peroxide etching, air abrasion with 50 µm Al(2)O(3), 1-3 µm synthetic diamond particles and silica coating with 30 µm SiO(x). Fiber posts were cemented to the root canals with adhesive resin cement (Panavia F 2.0). Three slices of 1.5 mm thick were obtained from each root. Push-out tests were performed with a universal testing machine. The data were analyzed with one-way analysis of variance (ANOVA) and Tukey HSD tests (α = 0.05). The effect of the surface treatments were examined under a scanning electron microscope (SEM) and surface roughness were evaluated with a profilometer.
  
  
  RESULTS
  Surface pre-treatment methods affected the bond strength (p < 0.05). The highest bond strengths were obtained by air abrasion with synthetic diamond particles, the lowest bond strength were obtained by etching with methylene chloride (p < 0.05).
  
  
  CONCLUSIONS
  Mechanical surface pre-treatment methods showed higher bond strength values than chemical methods. Synthetic diamond particles may be an alternative method to increase resin cement bonding on the quartz fiber post surfaces.
authors: Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey. skulunk@omu.edu.tr
authors: Safak
authors: S
authors: Kulunk
authors: Tolga
authors: T
authors: Kulunk
authors: Murat
authors: M
authors: Yenisey
mesh_terms: D003738:Dental Cements; D008855:Microscopy, Electron, Scanning; D011791:Quartz; D013499:Surface Properties
chemical_list: D003738:Dental Cements; D011791:Quartz