Stearate Salts as Brushite Bone Cement Setting Retardants


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This study sought to examine the efficiency of coating cement powder reactants in order to reduce the solubility rate of reactants and thereby increase setting times of cement systems. In this investigation magnesium and sodium stearate salts were used to coat the highly soluble monocalcium phosphate monohydrate (MCPM) powder component of a hydraulic brushite forming calcium phosphate cement system with b-tricalcium phosphate (b-TCP) as other component. The results showed that stearate coating of the MCPM reactant could lead to a 100% increase in setting and working times without affecting compressive strength of the set cement when applied with the appropriate P/L-ratio.



Key Engineering Materials (Volumes 284-286)

Main Theme:

Edited by:

Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.




M.P. Hofmann et al., "Stearate Salts as Brushite Bone Cement Setting Retardants", Key Engineering Materials, Vols. 284-286, pp. 19-22, 2005

Online since:

April 2005




[1] D. Knaack, M.E.P. Goad, M. Aiolova, C. Rey, A. Tofighi, P. Chakravarthy, D.D. Lee: J Biomed Mat Res 43 (1998), pp.399-409.


[2] L.M. Grover, U. Gbureck, A. Hutton, D.F. Farrar, C. Ansell, J.E. Barralet: Key Engineering Materials Vol. 254-256 (2004), pp.205-208.


[3] U. Gbureck, O. Grolms, J.E. Barralet, L.M. Grover, R. Thull: Biomaterials 24 (2003), p.41234131.

[4] J.E. Barralet, L.M. Grover, U. Gbureck: Biomaterials 25 (2004), pp.2197-2203.

[5] ASTM-Standard C266-99: ASTM International (2002).

[6] U. Gbureck, J.E. Barralet, L.M. Grover, M. Hofmann, R. Thull: BIOmaterialien 4(4) (2003), pp.258-263.