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Related Experiment Videos

Titanium casting using commercial phosphate-bonded investments with quick heating method.

Min Yan1, Hidekazu Takahashi

  • 1Institute of Oral Materials Science, Chung Shan Medical University, 110, Sec. 1 Chien-Kuo N. Road, Taichung 402, Taiwan. yan@csmu.edu.tw

Dental Materials Journal
|August 19, 2006
PubMed
Summary

A quick heating method is viable for titanium casting with Rematitan Plus and Tancovest investments. This method produced accurate titanium castings with minimal surface reactions, showing potential for dental applications.

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Materials

Background:

  • Titanium casting requires precise control over investment material properties and heating protocols.
  • Traditional heating methods can be time-consuming, impacting laboratory efficiency.
  • Evaluating rapid heating techniques is crucial for optimizing titanium casting processes.

Purpose of the Study:

  • To assess the feasibility of a quick heating method for titanium casting.
  • To evaluate the performance of two commercial investments (Rematitan Plus and Tancovest) with this rapid heating technique.

Main Methods:

  • Investigated residual thermal expansion, green strength, and fired strength of investments under quick heating.
  • Produced five full crown titanium castings per condition using argon arc melting and gas pressure casting.

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  • Measured the thickness of the cast surface reaction layer and assessed casting accuracy and surface roughness.

    • Main Results:

    • Residual thermal expansion ranged from 0.39% to 0.64%.
    • Green strength was 4.4–10.3 MPa; fired strength was 13.8–17.6 MPa.
    • Surface reaction layer thickness was ~200 microm; accuracy and roughness were not significantly affected by heating method.

    Conclusions:

    • The quick heating method is suitable for titanium casting using Rematitan Plus and Tancovest investments.
    • This method does not compromise casting accuracy or surface quality.
    • The findings support the adoption of rapid heating protocols in clinical settings.