Micromechanical versus chemical bonding between CoCr alloys and methacrylate resins.

摘要: INTRODUCTION: As adhesive systems for bonding to metals have developed in dentistry, considerable importance is attached the preparation of metal alloy both mechanical and chemical bonding. Different grit sizes when sandblasting Cobalt Chromium (CoCr) will provide a different three-dimensional surface Previous reports shown that 4-Methacryloyloxyethyl trimellitic anhydride (4-Meta) resins offer high bond strengths CoCr alloy, with various preparations providing varying strengths. The relevance this strength was assessed. Objectives: aim study evaluate size alumina determine effect on tensile four acrylic alloy. METHODS: Ten specimens were prepared within each group resins. Four assessed, 50, 110, 250 microm, range from 180 330 microm. tested one day production after storing at 37 degrees C phosphate-buffered saline seven days thermocycling. RESULTS: Grit resulted change average contact area available A significant difference (p < 0.01) existed between materials, but no = 0.0673) determined included. SIGNIFICANCE: It concluded did not could be achieved as result poor adaptation resin complex topography.