Octacalcium phosphate (OCP) coating was formed on the surface of Mg–Al–Zn–Ca alloy (AZX612) by anodically oxidized and subsequently immersed in a supersaturated aqueous solution containing calcium ion under ordinary temperature pressure. The OCP layer consisted both inner fine crystallites outer large crystallites, remained even after ultrasonication process. In simulated body fluid, AZX612 tre...

The aim of the present study was to evaluate the effects of experimental saliva substitutes based on carboxymethyl cellulose (CMC) differing in degrees of saturation with respect to calcium phosphates on the mineral loss of enamel in vitro. Demineralized bovine specimens (subsurface lesions) were exposed to one of six experimental CMC-based solutions with theoretical degrees of saturation with ...

Basic calcium phosphate (BCP) crystals, including hydroxyapatite, octacalcium phosphate (OCP) and carbonate-apatite, have been associated with severe osteoarthritis and several degenerative arthropathies. Most studies have considered the chondrocyte to be a bystander in the pathogenesis of calcium crystal deposition disease, assuming that synovial cell cytokines were the only triggers of chondr...

As the population ages worldwide, importance of maintaining metabolism skeletal system becomes increasingly important. The skeleton is core locomotor and oral structure. Moreover, infection control an essential part orthopedic surgery. This paper investigates new bone substitutes fabricated by ionic substitution method leading to octacalcium phosphate (OCP) with excellent contact antibacterial ...

The driving force and nucleation rate of calcium phosphate (Ca-P) precipitation in simulated body fluid (SBF) were analyzed based on the classical crystallization theory. SBF supersaturation with respect to hydroxyapatite (HA), octacalcium phosphate (OCP) and dicalcium phosphate (DCPD) was carefully calculated, considering all the association/dissociation reactions of related ion groups in SBF....

Biocompatible calcium phosphate ceramic grafts are able of supporting new bone formation in appropriate environment. The major limitation of these materials usage for medical implants is the absence of accessible methods for their patient-specific fabrication. 3D printing methodology is an excellent approach to overcome the limitation supporting effective and fast fabrication of individual comp...

Octacalcium phosphate (OCP) is proving to be an important intermediary in the formation of tooth and bone mineral and various pathological calcifications. Before this mineral can form, its solubility product must be exceeded. Thus, a knowledge of its precise values under various conditions is required for a basic understanding of calcification processes. The methodology suitable for measuring t...

Octacalcium phosphate (OCP) has attracted the interest of researchers looking for new biomaterials due to its excellent biocompatibility and high formability. Furthermore, it was an attraction medical combination products that ions molecule doping ability OCP, which originated distinct crystal structure. Then, as antibacterial bone substitute, Ag-substituted OCP (OCP-Ag) a candidate centerpiece...

Octacalcium phosphate (OCP) is widely used in biomaterial fabrication by virtue of its unique crystal structure and low environmental loading. Although various ion molecule substitution methods into the OCP unit lattice have been introduced, it remains unclear which factors mechanisms dominate process. Experimental studies indicated that Na alkali metal ions are substituted at P3 PO4 conjugated...

We provide evidence that citrate anions bridge between mineral platelets in bone and hypothesize that their presence acts to maintain separate platelets with disordered regions between them rather than gradual transformations into larger, more ordered blocks of mineral. To assess this hypothesis, we take as a model for a citrate bridging between layers of calcium phosphate mineral a double salt...