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Metal-ceramic bond strength

M Persson1, M Bergman

  • 1Nobelpharma AB, Procera Research & Development, Göteborg, Sweden.

Acta Odontologica Scandinavica
|June 1, 1996
PubMed
Summary
This summary is machine-generated.

A new mechanical shear stress test was developed for dental metal-ceramic systems. Titanium-ceramic bonds demonstrated superior strength compared to gold-ceramic, suggesting suitability for dental restorations.

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Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Mechanical Engineering

Background:

  • Current dental metal-ceramic bond tests lack universal acceptance.
  • Understanding stress distribution in the adherence region is crucial for test development.

Purpose of the Study:

  • To establish a reliable mechanical shear stress test for dental metal-ceramic systems.
  • To compare the bond strength of different metal-ceramic systems using this new test.
  • To integrate finite element stress analysis for comprehensive evaluation.

Main Methods:

  • Development of a novel mechanical shear stress test.
  • Application of finite element stress analysis to an idealized dental crown model.
  • Testing of titanium-ceramic (machined and cast) and high gold-ceramic systems.

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Main Results:

  • Titanium-ceramic systems exhibited higher shear strength than the reference gold-ceramic system.
  • The developed shear stress test is applicable to various brittle fracture material combinations.
  • Results suggest satisfactory bond strength of titanium-ceramic systems for dental applications.

Conclusions:

  • The proposed interfacial bond strength test offers a viable method for evaluating dental metal-ceramic systems.
  • Titanium-ceramic materials show promising bond strength for dental crown-and-bridge applications.
  • The test methodology is adaptable for diverse material combinations prone to brittle fracture.