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Hydroxyapatite is calcium phosphate mineral substituted with Mg/Zn anion using precipitate method which indicates the changes in structure using X-ray diffraction. The functional groups of the material shows the bonds and morphology were analyzed using Field Emission Scanning Electron Microscopy. The application of ions doped in hydroxyapatite, which gives antibacterial activity for improving medical application due to its biocompatibility. Introduction. Material with more stable with high dense which is insoluble in Calcium Phosphates is Hydroxyapatite (Hap) in two crystal forms Monoclinic and Hexagonal. In practical hexagonal is important because monoclinic form is destable with small amount of foreign ions. Ionic substitution used to improve the biological performance of calcium phosphates developing the applications in biomedical field [1]. The ions Zn, Cu, Sr provide crystallinity also it increase antimicrobial, Ag-Zn ions substituted using microwave refluxing method used for biomedical applications [2]. Ag has higher Antibacterial activity with less toxicity but it is limited due to its high cost and discoloration. A Zn ion has antibacterial activity with less toxicity with color stability, heat resistance in low cost. Hap substituted with single and also as co-do pants investigating photo luminous using Mn with Sb and compatibility, corrosion resistance using Zn doped Si, Ag improves mechanical and biological behaviour of Hap by substituting Zn with F-Ti incorporate in Ag with Hap provides bioactivity and bio compatibility as nanotubes using for implantations. TiO2 doped Ag has potential application on photo catalysts, oxidation on gas sensors, cell membranes, toxic contamination on water to CO2 [3-8]. Co-do pants varying different anions affects structure and morphology of Hap. Mg, Zn ions are trace elements present in human body due to properties (ie. formation of bones) using Sol-gel method with high purity. The Mg ion increases the solubility and reduces the lattice parameters improves crystallinity by increasing Mg ratio and Zn ion gives changes in morphology, increase stability to materials which reduces thermal stability. Morphology may be irregular form agglomeration by increasing Zn content. Ions with less ionic radius, which give stability to the Hap and increase the solubility with decrease in lattice parameters. Ceramic materials with different anions used for surface modification to improve both mechanical and corrosion property for implantation. Zn acetate added with Hap, which improves antibacterial activity using extraction method, provides oral hygiene products. Ag with Zn oxides using plant extract which increase the antibacterial activity and also it kills the cancer cells [9]. Ions Ag-Zn nitrates on Hap determines their benefit on biomedical applications. Previous studies focused on individual substitution of ions in Hap also with co-do pants but varying different anions not yet reported based on the medical applications. Ionic substitution improves properties of hydroxyapatite.

Co-Dopands on Hydroxyapatite in Structural, Morphology And in Antibacterial Activity