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[Superplastic forming of titanium alloy denture base]
Shika Zairyo, Kikai = Journal of the Japanese Society for Dental Materials and Devices
|March 1, 1989
Summary
Superplastic forming of titanium alloy (Ti-6Al-4V) offers a superior method for creating denture bases. This technique results in better fitting, smoother, and stronger dental prosthetics compared to traditional casting methods.
Area of Science:
- Biomaterials Science
- Materials Engineering
- Biocompatible Alloys
Context:
- Titanium alloys, specifically Ti-6Al-4V, are known for excellent biocompatibility and mechanical properties.
- Superplastic forming allows significant deformation at elevated temperatures (800-900°C).
- Fabrication of dental prosthetics, like denture bases, is a key application area.
Purpose:
- To investigate the feasibility of using superplastic forming for Ti-6Al-4V denture bases.
- To compare the properties and fit of superplastically formed Ti-6Al-4V denture bases with traditional cobalt-chromium (Co-Cr) alloy castings.
- To evaluate the suitability of Ti-6Al-4V for dental applications through superplastic forming.
Summary:
- Ti-6Al-4V plates were superplastically formed into denture bases using argon gas pressure at 850°C on a die produced with improved phosphate-bonded investment.
- The resulting Ti-6Al-4V denture bases exhibited superior fit and smoother surfaces compared to Co-Cr alloy castings.
- Mechanical properties, including tensile and yield strength, were higher in superplastically formed Ti-6Al-4V, with approximately 10% elongation.
Impact:
- Superplastic forming of Ti-6Al-4V presents a promising alternative for fabricating high-performance denture bases.
- This technique yields dental prosthetics with enhanced fit, surface finish, and mechanical integrity.
- The study supports the clinical viability of Ti-6Al-4V superplastic forming for advanced dental applications.