Effect of the Composition in β-TCP-MCPM Bone Cement Containing Dense ß-TCP Granules
Effect of the starting compostion was studied in bone cement containg coarse b-tricalcium phosphate (b-TCP) granules which was very dense and round. With respect to the mixing ratio between b-tricalcium phosphate and monocalcium monophophate (T:M), the properties such as setting time, density and compressive strength were measured. The properties of bone cement prepared from normal powdery b-TCP was strongly dependent on the initial mixing ratio (T:M). Though the compressive strength as well as density was maximum at T:M = 6:4, small departure of compostions from T:M=6:4 resulted in drastic decrease of compresive strength. On the contrary, in the specimens from granular b-TCP, compressive strength was much less deependent on the initial mixing ratio. Range of optimum compressive strength covered from T:M=6:4 to 8:2. Therefore, granular groups provided more degree of freedom to control other properties such as setting time while maintaing its compressive strength.
Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.
K. S. Oh and S. R. Kim, "Effect of the Composition in β-TCP-MCPM Bone Cement Containing Dense ß-TCP Granules ", Key Engineering Materials, Vols. 284-286, pp. 141-144, 2005