Mechanical strength of calcium phosphate cement in vivo and in vitro.
Two different kinds of calcium phosphate cement were developed for implant fixation: cement A comprised of alpha-tricalcium phosphate (alpha-TCP) 95% and dicalcium phosphate dihydrate (DCPD) 5%, and cement B comprised of alpha-tricalcium phosphate 90% and dicalcium phosphate dihydrate 10%. The compression strength and pullout force of the new materials were tested both in vitro and in vivo. Microscopic observations were performed on the interface between bone and cement. Cement A showed a greater mechanical strength than cement B. The results suggest the clinical possibility of this calcium phosphate cement, which could be used as a material for enhancing implant fixation.
Yamamoto
H
H
Department of Orthopaedic Surgery, Aichi Medical University, Japan.
Niwa
S
S
Hori
M
M
Hattori
T
T
Sawai
K
K
Aoki
S
S
Hirano
M
M
Takeuchi
H
H
D000818:Animals; D001672:Biocompatible Materials; D001843:Bone Cements; D002130:Calcium Phosphates; D019245:Compressive Strength; D020007:Implants, Experimental; D016348:Osseointegration; D011817:Rabbits
D001672:Biocompatible Materials; D001843:Bone Cements; D002130:Calcium Phosphates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous