Comparative Study of the Degradation Behavior of Mechanically Mixed and Chemically Precipitated Biphasic Calcium Phosphates

Abstract:

Surface morphology and degradation behavior of mechanically mixed and chemically precipitated biphasic calcium phosphate (M-BCP and P-BCP) were compared. For the M-BCP powder, commercial HA and TCP powders were used. In order to prepare P-BCP powder, precipitation method was used. The particle size of P-BCP was smaller than that of M-BCP. The disk-type specimens of each powder were prepared for the morphology comparison and degradation test. The surface morphology of sintered samples was porous in M-BCP and dense in P-BCP. The degradation test was conducted in the revised simulated body fluid (R-SBF) for 1, 7, and 21 days. Surface morphology and degradation rate of two samples were different. The weight gain in both samples increased linearly with immersion period due to apatite-like layer formation. However, the weight gain in M-BCP was much higher than that in P-BCP. The weight gain was related to the surface morphology and degradation with immersion period.

• Periodical: Key Engineering Materials (Volumes 309-311)
• Pages: 227-230
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.309-311.227
• Online since: May 2006
• Authors: D.J. Yang, Timur R. Tadjiev, Jae Woong Kim, Chang Kuk You, S.K. Choi, K.B. Park, K.H. Ryoo, Suk Young Kim
• Keywords: Biphasic Calcium Phosphate (BCP), Hydroxyapatite (HAP), Tricalcium Phosphate (TCP)

References

[1] G. Daculsi, O. Laboux, O. Malard : Materials in Med. 14 (2003) pp.3130-3146.

[2] R. Z. Legeros : Adv. Dent. Res. 2, pp.164-183 (1998).

[3] G. Daculsi, J. M. BOULER and R. Z. LEGEROS, Int. Rev. Cytol., 172 (1996) 129.

[4] Bouler, J-M., Trecant, M., Delecrin : J. Am. Ceram. Soc., 1998, 81, 2245-2252.

[5] Kivrak, N. and Cuneyt Tas, A. : J. Am. Ceram. Soc., 1998, 81, 2245-2252.

[6] Yang, X. And Wang, Z. : J. Mater. Chem., 1998, 8, 2244-2237.