Biomateriais: deposição de hidroxiapatita sobre superfície de Ti-cp modificada por aspersão térmica

Abstract

BIOMATERIALS: DEPOSITION OF HYDROXYAPATITE ON Ticp SURFACES MODIFIED BY THERMAL ASPERSION. The osseointegrated titanium implants are reliable and safe alternatives to treatments for long periods of time. For surface modification, thermal aspersion of TiO 2 was used. The samples with and without TiO 2 were treated with NaOH and SBF in order to obtain a layer of HA. Characterization was done by SEM and FTIR. The images of HA obtained by SEM show a uniform morphology and a porous structure with spherical particles. The IR spectra show that the surface of Ticp/ TiO 2 is more favorable for the HA deposit, as can be seen by the increase of the crystalline structure and the very intense and defined bands of the OH group of HA that is verified about 3571 and 630 cm-1. Thus the Ticp/ TiO 2 surface presents a satisfactory nucleation of HA when compared to Ticp.

Corrosion resistance improvement of titanium base alloys

“…[1][2][3][4][5][6] These materials have very good corrosion resistance and biocompatibility. In the last years, important problems have been raised over their long-term performance.…”

The Influence of Zinco on Bone Repair: A Literature Review

“…[3][4][5] Com isso pesquisadores vêm se dedicando para encontrar e/ou desenvolver materiais semelhantes à estrutura óssea, que sejam adequados para substituí-la ou restaurá-la. [6][7][8] Dentre as opções de tratamento incluemse autógenos, alógenos e xenógenos e aloplástico.…”

“…Nesta revisão de literatura destaca-se os materiais a base de zinco, os quais demonstram uma excelente capacidade de indução do reparo ósseo. [1][2][3][4][5][6][7][8][9][10][11][12][13] O zinco atua em várias vias bioquímicas, como na síntese proteica, no metabolismo de carboidratos e ácidos nucleicos. [10][11][12] É conhecido por seu efeito estimulatório direto na mineralização do tecido ósseo em testes realizados in vitro, podendo acelerar a formação de células em cultura e atuando como um ativador do metabolismo ósseo.…”

Synthesis and Optimization of Colloidal Hydroxyapatite Nanoparticles by Hydrothermal Processes

“…To be a viable alternative material to bone, it should be biocompatible, possess a biofunctional resistance and have the necessary mechanical and chemical properties to support the loads imposed. [1][2][3] The search for materials with human biocompatibility properties constitutes a major challenge for researchers in the field of new materials. Biomimetism and bioinspiration have been used for the synthesis and development of innovative materials and devices for various biomedical applications.…”

“…6 Synthetic HA nanoparticles exhibit good biocompatibility, bioactivity and osteoinducibility. [1][2][3][6][7][8] Due to its unique quantum confining effects and the reactivity of the surface area, nanocrystalline HA exhibits better bioactivity, biocompatibility and improved mechanical properties than microcrystalline and bulk HA. 9 HA is the major mineral component of bone and teeth structures, corresponding to about 30-70% of the mass of bones and teeth.…”