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Related Experiment Videos

Weldability of beta titanium arch wires.

M T Donovan, J J Lin, W A Brantley

    American Journal of Orthodontics
    |March 1, 1984
    PubMed
    Summary

    Orthodontists can achieve strong beta titanium arch wire welds with minimal distortion using the flat-to-flat electrode configuration. This study determined optimal settings for four commercial welders, enhancing clinical application.

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    Area of Science:

    • Orthodontics
    • Materials Science
    • Biomaterials Engineering

    Background:

    • Beta titanium arch wires are widely used in orthodontics.
    • Reliable joining methods for these wires are crucial for effective treatment.
    • Current welding techniques require optimization for clinical application.

    Purpose of the Study:

    • To evaluate the effectiveness of different welding configurations and settings for joining beta titanium arch wires.
    • To determine the optimal welding parameters for achieving strong and ductile joints.
    • To provide guidance for orthodontists using commercial welding equipment.

    Main Methods:

    • Joining beta titanium arch wire segments using four commercial welders.
    • Employing point-to-point and flat-to-flat electrode configurations with varied settings.
    • Conducting tension-shear, tension-twist, and 90-degree cold-bend tests to assess joint strength and ductility.
    • Performing microstructural analysis of welded joints.

    Main Results:

    • The flat-to-flat electrode configuration yielded stronger welded joints with reduced distortion compared to point-to-point.
    • Optimal welding settings were identified for each of the four tested welders.
    • Ductility of the welded joints was assessed relative to the as-received wires.
    • Microstructural observations correlated welding energy levels with joint characteristics.

    Conclusions:

    • The flat-to-flat electrode configuration is recommended for welding beta titanium arch wires in orthodontic applications.
    • Optimized welding parameters enhance joint strength and minimize distortion.
    • Understanding the relationship between welding settings and microstructure is key to reliable clinical outcomes.

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