title: Mechanical strength of calcium phosphate cement in vivo and in vitro.
abstract: 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.
authors.affiliation: Department of Orthopaedic Surgery, Aichi Medical University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yamamoto
authors.forename: S
authors.initials: S
authors.lastname: Niwa
authors.forename: M
authors.initials: M
authors.lastname: Hori
authors.forename: T
authors.initials: T
authors.lastname: Hattori
authors.forename: K
authors.initials: K
authors.lastname: Sawai
authors.forename: S
authors.initials: S
authors.lastname: Aoki
authors.forename: M
authors.initials: M
authors.lastname: Hirano
authors.forename: H
authors.initials: H
authors.lastname: Takeuchi
mesh_terms: D000818:Animals; D001672:Biocompatible Materials; D001843:Bone Cements; D002130:Calcium Phosphates; D019245:Compressive Strength; D020007:Implants, Experimental; D016348:Osseointegration; D011817:Rabbits
chemical_list: 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