Costa AM Author
Subjects of specialization
Affiliation
Calcium phosphates; Zinc ion substitution; Ostrich eggshell; Bioactivity; Toxicity
Military Institute of Engineering-IME, Materials Science Post Grad Programme, P
Costa AM Military Institute of Engineering-IME, Materials Science Post Grad Programme, Pça Gen. Tiburcio, 80, Praia Vermelha, Urca, Rio de Janeiro, R.J., Brazil |
Research Article Open Access
Author(s): Ferreira JRM, Louro LHL, Costa AM, Marçal RLSB, Navarro da Rocha D, Barbosa RM, Campos JB and Prado da Silva MH
Natural calcium source materials can be thermochemically processed and directly transformed into hydroxyapatite. In this work, ostrich eggshell was used as Ca2+ ions source in the preparation of zinc-calcium phosphate coatings on Ti substrates promoted by a two-step deposition method. The obtained coatings were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy with field emission gun (FEG-SEM), bioactivity using McCoy medium and toxicity with chicken embryo chorioallantoic membrane (CAM). The results showed the presence of Znbrushite and Zn-hydroxyapatite as coating phases. Bioactivity was observed in all samples showing bone-like apatite on their surface. The toxicity test showed inflammatory response between mild to moderate c... view moreĀ»