title: Tensile bond strength of four denture resins to porcelain teeth with different surface treatment.
abstract: OBJECTIVE
  This study evaluated the bond strength between porcelain denture teeth (Bioblend 43D) and four different polymerized denture resins (Lucitone 199, Palapress, Acron MC, Triad) with and without a bonding agent and after four different types of surface treatment (polished, HF etched, sandblasted, air-abraded).
  
  
  METHODS
  Central incisor porcelain denture teeth were divided into 32 groups of 5 each. Tensile bond strength (MPa) was determined using a testing machine at crosshead speed of 0.5 mm/min. Mean and standard deviation are listed. Data were analyzed by two-way ANOVA. Means were compared by Tukey-Kramer intervals at 0.05 significance level.
  
  
  RESULTS
  All surface treatment increased bond strength compared to polished surface and the highest bond strength was found with Palapress resin with etched porcelain surface (8.1 MPa). Bonding agent improved the bond strength of all denture resins to porcelain teeth. Superior bonding was found with Palapress and air-abraded porcelain (39 MPa).
  
  
  CONCLUSIONS
  Resins with different curing methods affect the bond strength of porcelain teeth to denture bases. Superior bonding was found with auto-polymerized resin (Palapress). Application of ceramic primer and bonding agent to porcelain teeth with and without surface treatment will improve the bond strength of all denture resins to porcelain teeth.
authors.affiliation: Department of Prosthodontics, Faculty of dentistry, Tanta University, Tanta, Egypt.
authors.forename: Mohamed
authors.initials: M
authors.lastname: El-Sheikh
authors.affiliation: Houston Biomaterials Research Center, University of Texas-Houston Dental Branch, Houston, TX, USA.
authors.forename: John
authors.initials: J
authors.lastname: Powers
keywords: Acrylic resins; Denture bases; Porcelain denture teeth; Porcelain surface treatment