Effects of powder-to-liquid ratio on properties of β-tricalcium-phosphate cements modified using high-energy ball-milling

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  • IDA Yumika
    Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
  • BAE Jiyoung
    Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
  • SEKINE Kazumitsu
    Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science
  • KAWANO Fumiaki
    Department of Comprehensive Dentistry, Tokushima University Graduate School of Oral Science
  • HAMADA Kenichi
    Department of Biomaterials and Bioengineering, Tokushima University Graduate School of Oral Science

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<p>The authors have developed a β-tricalcium-phosphate (β-TCP) powder modified mechano-chemically through the application of a ball-milling process (mβ-TCP). The resulting powder can be used in a calcium-phosphate-cement (CPC). In this study, the effects of the powder-to-liquid ratio (P/L ratio) on the properties of the CPCs were investigated, and an appropriate P/L ratio that would simultaneously improve injectability and strength was clarified. The mβ-TCP cement mixed at a P/L ratio of 2.5 and set in air exhibited sufficient injectability until 20 min after mixing, and strength similar to or higher than that mixed at a P/L ratio of 2.0 and 2.78. Although the mβ-TCP cements set in vivo and in SBF were found to exhibit a lower strength than those set in air, it did have an appropriate setting time and strength for clinical applications. In conclusion, P/L ratio optimization successfully improved the strength of injectable mβ-TCP cement.</p>

Journal

  • Dental Materials Journal

    Dental Materials Journal 36 (5), 590-599, 2017

    The Japanese Society for Dental Materials and Devices

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