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Sintered hydroxyapatite ceramic for wear studies.

H M Rootare, J M Powers, R G Craig

    Journal of Dental Research
    |July 1, 1978
    PubMed
    Summary
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    A novel sintered hydroxyapatite (HAP) ceramic exhibits physical properties and wear characteristics similar to human enamel. This biomaterial shows promise for applications in wear studies and dental research.

    Area of Science:

    • Biomaterials Science
    • Tribology
    • Ceramic Engineering

    Background:

    • Hydroxyapatite (HAP) is a key component of human hard tissues.
    • Developing synthetic HAP with properties mimicking natural tissues is crucial for biomedical applications.
    • Wear studies require materials with well-defined and reproducible tribological properties.

    Purpose of the Study:

    • To synthesize a sintered hydroxyapatite (HAP) ceramic suitable for wear studies.
    • To evaluate the physical properties of the synthesized HAP ceramic.
    • To compare the tribological performance (coefficient of friction and wear) of the HAP ceramic with human enamel.

    Main Methods:

    • Preparation of sintered hydroxyapatite (HAP) ceramic from commercial tricalcium phosphate.
    • Characterization of physical properties.

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  • Tribological testing including measurement of tangential force, track width, and surface failure analysis.

    • Main Results:

    • The sintered HAP ceramic demonstrated physical properties closely resembling those of human enamel.
    • The coefficient of friction of the HAP ceramic approximated that of human enamel.
    • Wear characteristics, including track width and surface failure, were comparable to human enamel.

    Conclusions:

    • Sintered hydroxyapatite (HAP) ceramic can be prepared with physical properties similar to human enamel.
    • The synthesized HAP ceramic exhibits tribological behavior comparable to human enamel, making it a suitable substitute for wear studies.
    • This HAP ceramic offers a promising biomaterial for research in dental wear and implantology.