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Related Experiment Videos

Cobalt-chromium-titanium alloy for removable partial dentures

C Y Iwama1, J D Preston

  • 1Don and Sybil Harrington Foundation, Los Angeles, California, USA.

The International Journal of Prosthodontics
|July 1, 1997
PubMed
Summary
This summary is machine-generated.

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Cobalt-chromium-titanium (Co-Cr-Ti) alloys show promise for dental frameworks. The 5% titanium alloy demonstrated superior physical properties and fatigue resistance compared to pure titanium and Vitallium.

Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Materials

Background:

  • Removable partial denture (RPD) frameworks require alloys with excellent physical and mechanical properties.
  • Cobalt-chromium (Co-Cr) alloys are widely used, but enhancements are continually sought.
  • Titanium's biocompatibility and strength offer potential for improving dental alloys.

Purpose of the Study:

  • To evaluate the suitability of cobalt-chromium-titanium (Co-Cr-Ti) alloys for RPD frameworks.
  • To compare the physical properties of Co-Cr-Ti alloys with pure titanium and a commercial Co-Cr alloy (Vitallium).
  • To determine the optimal titanium content for Co-Cr-Ti dental alloys.

Main Methods:

  • Alloying pure titanium with cobalt and chromium at 4%, 5%, and 6% dilutions.

Related Experiment Videos

  • Casting clasp replicas using Co-Cr-Ti and Vitallium alloys.
  • Subjecting cast replicas to cyclic deflection and fatigue failure testing.
  • Analyzing fatigue specimens using scanning electron microscopy (SEM) and elemental analysis.

    • Main Results:

    • The Co-Cr-5% Ti alloy exhibited the most favorable physical properties among the tested dilutions.
    • Co-Cr-5% Ti demonstrated significantly better physical properties than pure titanium.
    • The Co-Cr-5% Ti alloy possessed a greater flexure fatigue limit compared to Vitallium.

    Conclusions:

    • Cobalt-chromium alloyed with 5% titanium presents superior physical properties for RPD frameworks.
    • Co-Cr-5% Ti offers enhanced fatigue resistance, making it a viable alternative to existing dental alloys.
    • This Ti-enhanced alloy shows significant potential for use in removable partial denture frameworks.