Titanium Alloy Research Yields Promising Results for Dental Implants

New research on titanium alloys conducted at Technical University Dortmund (TU Dortmund) has provided a comprehensive understanding of the mechanical and electrochemical properties of titanium grade 23 alloy, a material commonly used in dental implants. The study found that additive manufacturing enables patient-specific manufacturing and reduces stress shielding by using lattice structures. The research also demonstrated the high corrosion resistance of the alloy and its suitability for use in medical implants.

Key Takeaways:

• The titanium grade 23 alloy exhibits excellent mechanical properties and biocompatibility, making it an ideal material for dental implants.
• Additive manufacturing allows for patient-specific manufacturing and reduces stress shielding by using lattice structures.
• The research required a comprehensive knowledge of the mechanical properties under quasi-static and cyclic loading, the microstructure, and the electrochemical properties of the alloy.
• Suitable heat treatments must be selected and validated to ensure the mechanical behavior of the alloy meets the required specifications in DIN EN ISO 5832-3.
• The study found that the heat-treated state of the alloy reduced high residual stresses caused by the manufacturing process.
• The fatigue strength of the alloy was increased compared to literature values, and no significant differences were found between the as-built and heat-treated states in the high-cycle fatigue range.
• Electrochemical corrosion investigations revealed no remarkable differences between the two material states, and the high corrosion resistance of the alloy was demonstrated.

Statistics:

• The research involved the use of lattice structures instead of solid material to reduce stress shielding.
• The study characterized the mechanical behavior of the alloy in tensile and constant amplitude tests, hardness analysis, and microstructure analysis.
• The electrochemical properties of the alloy were determined using electrochemical impedance spectroscopy and potentiodynamic polarization measurements.
• The research found that the fatigue strength of the alloy was increased compared to literature values.
• The high corrosion resistance of the alloy was demonstrated in electrochemical corruption investigations.

Sources:

• Microstructural, Electrochemical, and Mechanical Assessment of Additive Manufactured Titanium Grade 23 for Dental Implants Application. In Vivo, 2025;39(3):1751-1766.
• Technical University Dortmund (TU Dortmund). "Findings in Chemicals and Chemistry (Microstructural, Electrochemical, and Mechanical Assessment of Additive Manufactured Titanium Grade 23 for Dental Implants Application)." Chemicals & Chemistry, May 16, 2025, p 3878.