Evaluation of Shear Bond Strength of Composite Resin Veneers and Nickel-Chromium Alloy - An Invitro Study
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 17, Issue 2
Abstract
Objective: This study measured and compared the shear bond strengths of compositeresin veneer to Ni-Cr alloy with mechanical, chemical and mechanochemical retention methods. Materials & Methods: A total of 96 base metal Ni-Cr alloy cast specimenswith meshwork, beads for mechanical, SR Link, Alloy Primer for chemical and combination of these two formechano -chemical bonding were prepared.Composite buttons were built and cured on the specimens and tested for shear bond strength. The study was categorized based on the mode of retention into eight groups of twelve specimens each. Half of the samples from each group (6) were tested before thermocycling and the rest half were tested after subjecting them to 500 cycles of thermocycling with a temperature variation from 5°C to 55°C Results: The bond strength of a light cure composite material was higher in mechanochemicalmeshwork+SRLink,beads+SR Link, followed by beads, SRLink, and theleast was observed in Alloy Primer.Thermocycling produced a significant decrease in bond strength in most of the groups . Conclusion: The use ofmeshwork+AlloyPrimer combination and the beads orSR Link used either alone or in combinationproduced higher shear bond strength of the composite to the metal alloys.
Authors and Affiliations
DrG. Gomathi MDS, Dr K. S. G. A . Nasser MDS, DrK. Janaki MDS, DrK. Ramkumar MDS, Dr E. Subramaniam MDS
Keywords
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- EP ID EP361401
- DOI 10.9790/0853-1702031725
- Views 71
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