title: Hydrolyses of calcium phosphates-allografts composite in physiological solutions.
abstract: Hydrolysis of calcium phosphates cement- allografts composite in calf serum and that in saline were examined in comparison with those of the calcium phosphates cement in both the solutions. The calcium phosphates cement consists of alpha-tricalcium phosphate (alpha-TCP), tetracalcium phosphate (TetCP), dicalcium phosphate dihydrate (DCPD), and hydroxyapatite (HAP), which is clinically used as Biopex. In the hydrolyses of Biopex-allografts composite in both the solutions, the calcium phosphates cement was transformed into HAP. On the other hand, in the hydrolyses of Biopex, HAP was formed after 1 day and octacalcium phosphate (OCP) was gradually formed after 7 days. In the presence of allografts, plate-like crystals were deposited and in the absence of allografts, needle-like crystals were deposited in both the solutions. By the addition of allografts, the hydrolysis process of the calcium phosphates cement was significantly changed.
authors.affiliation: Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Nomoto
authors.forename: Keiji
authors.initials: K
authors.lastname: Haraguchi
authors.forename: Shunro
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Sugano
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Nakayama
authors.forename: Tohru
authors.initials: T
authors.lastname: Sekino
authors.forename: Koichi
authors.initials: K
authors.lastname: Niihara
mesh_terms: D001672:Biocompatible Materials / Q000032:analysis / Q000737:chemistry*; D001826:Body Fluids / Q000737:chemistry*; D002130:Calcium Phosphates / Q000032:analysis / Q000737:chemistry*; D006868:Hydrolysis; D008422:Materials Testing; D008968:Molecular Conformation; D012709:Serum Albumin / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry*; D014184:Transplantation, Homologous
chemical_list: D001672:Biocompatible Materials; D002130:Calcium Phosphates; D012709:Serum Albumin; D012965:Sodium Chloride