comparison of the effect of nd:yag laser and sandblasting on shear bond strength of a commercial ni-cr alloy to porcelain

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ID: 225571
2016
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Abstract
Introduction: Failures might occur at metal‒porcelain interfaces as a problem with metal‒ceramic restorations even with the application of airborne-particle abrasion technique. This study was undertaken to evaluate the effect of Nd:YAG laser treatment on the bond strength of porcelain fused to metal. Methods:  Twenty-four cylindrical specimens (4 mm in diameter and 4 mm in height) were made of a commercially available nickel‒chromium alloy by lost-wax technique. Half of the specimens were surface-treated by air-borne particles and the other half was irradiated with Nd:YAG laser beams (wavelength of 1064 nm, energy and frequency of 120 mJ and 10 Hz, respectively, and a power setting of 6 kW). All the specimens (air-abraded and laser-treated) were covered with a 4-mm layer of opaque porcelain in two-stage baking and subjected to shear bond strength test (a 10-kgf at 1 mm/min) until fracture occurred. A fractured specimen from each group was evaluated using scanning electron microscopy. T-test was used for statistical analysis and statistical significance was set at P
Reference Key
moslehifard2016journalcomparison Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Elnaz Moslehifard, Nasim Khosronejad, Farahnaz Fahimipour
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Journal frontiers in environmental science
Year 2016
DOI
Bonding strength of laser treated Ni-Cr alloy
URL
http://jdmt.mums.ac.ir/article_6994_3755460dcff290b0c1ea5a628ba46a6f.pdf
Keywords
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