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Determining the Mechanical Strength of Ultra-Fine-Grained Metals
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Surface bond strength in nickel based alloys.

Ganesh Ramesh1, T V Padmanabhan2, Padma Ariga3

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|January 17, 2014
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This study compared the bond strength of a cost-effective indigenous alloy to an imported alloy for dental restorations. Results showed no significant difference, indicating the indigenous alloy is a viable alternative.

Keywords:
Flexural strengthNickel based alloySurface bond strength

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Materials

Background:

  • The longevity of porcelain fused to metal restorations depends on the ceramic-to-alloy bond strength.
  • Imported non-precious alloys are increasingly expensive for dental applications.

Purpose of the Study:

  • To evaluate and compare the flexural bond strength of ceramic to an indigenous nickel-based alloy (NFTDC, Hyderabad) versus an imported alloy (Heraenium S).
  • To determine the suitability of the indigenous alloy as a cost-effective alternative.

Main Methods:

  • Utilized an Instron testing machine with a three-point loading system to measure bond strength.
  • Performed a Student t test to analyze the statistical significance of the differences in bond strength.

Main Results:

  • The indigenous NFTDC alloy exhibited a mean flexural bond strength of 81.75 (SD=12.25).
  • The imported Heraenium S alloy showed a mean flexural bond strength of 84.42 (SD=10.35).
  • The Student t test (t=0.644) indicated no statistically significant difference between the bond strengths of the two alloys.

Conclusions:

  • The indigenous NFTDC alloy demonstrates comparable bond strength to the imported Heraenium S alloy.
  • The NFTDC alloy presents a cost-effective solution for porcelain fused to metal restorations, addressing the rising costs of imported materials.