Journal of Materials Science: Materials in Medicine

, Volume 15, Issue 1, pp 13–17

Basic properties of apatite cement containing spherical tetracalcium phosphate made with plasma melting method

Authors

    • Department of Biomaterials, Faculty of Dental ScienceKyushu University
  • S. Matsuya
    • Department of Biomaterials, Faculty of Dental ScienceKyushu University
  • M. Nakagawa
    • Department of Biomaterials, Faculty of Dental ScienceKyushu University
  • K. Udoh
    • Department of Biomaterials, Faculty of Dental ScienceKyushu University
  • K. Suzuki
    • Department of Biomaterials, Science of Functional Recovery and Reconstruction, Graduate School of Medicine and DentistryOkayama University
Article

DOI: 10.1023/B:JMSM.0000010092.01661.a8

Cite this article as:
Ishikawa, K., Matsuya, S., Nakagawa, M. et al. Journal of Materials Science: Materials in Medicine (2004) 15: 13. doi:10.1023/B:JMSM.0000010092.01661.a8

Abstract

Apatite cement (AC) can be injected through syringe and forms apatite mass. Therefore, AC is very useful for a minimally invasive surgical operation aimed for the reconstruction of bone defects. However, injectability of current AC is not satisfactory for its clinical use. In this investigation, therefore, spherical tetracalcium phosphate (s-TTCP) was prepared with plasma melting method and its effect on injectability were evaluated as well as other basic properties of AC. We found much better handling property and injectability when we used s-TTCP as a component of AC (s-AC). For example, cement spread area used as an index of consistency of the s-AC paste was 512 mm2 whereas that of ordinary AC with irregular TTCP (i-AC) was 158 mm2 when powder to liquid mixing ratio was 2.5. However, diametral tensile strength of set s-AC (1.4 MPa) was significantly lower than that of set i-AC (10.7 MPa) when the powder to liquid ratio was 4.0. X-ray powder diffraction analysis revealed limited formation of apatite in the case of s-AC. Although there are some drawbacks, we feel the use of spherical particle is very useful to improve the injectability of AC. Therefore, it is important to find suitable method to prepare spherical powder as the component of AC.

Copyright information

© Kluwer Academic Publishers 2004