Bioactivity of strontium-monetite coatings for biomedical applications

In vitro evaluation of natural hydroxyapatite from Osteoglossum bicirrhosum fish scales for biomedical application

“…The high bioactivity of the FSHA.800 is confirmed by the formation of an apatite layer after 3 days of immersion in McCoy medium, as proven in Figure 5B, where it is possible to see a more soft formation of the bone‐like apatite structure. The described results are in agreement with previous studies where structure with similar characteristics was reported by different researchers in SBF and McCoy medium, 17,29–31 however, the presented bioactivity of this material was just in 3 days, while the most of works in the literature present a growth response time after 14 or 21 days 6,32,33 …”

“…It can be observed in Figure 5C what refers to the FSHA.800 sample after 7 days, a change in the material surface, which was completely covered by irregular structures like needles, that forms large globular structures with a size around 2–4 μm, these structures are known like cauliflower 6 . This type of structure is characteristic of the bone‐like apatite layer formation, which characterizes the bioactivity of the material 17,28 . The high bioactivity of the FSHA.800 is confirmed by the formation of an apatite layer after 3 days of immersion in McCoy medium, as proven in Figure 5B, where it is possible to see a more soft formation of the bone‐like apatite structure.…”

“…The pellets were soaked in 16 ml McCoy's medium (Vitrocell) in Falcon tubes. The analysis conditions were maintained at 37°C under a 5% CO 2 atmosphere, in an incubator (PANASONIC, COM‐19AIC‐PA model) for 3 and 7 days 16,17 . McCoy's medium was replaced every 3 days to avoid any changes in the cationic concentration that occur due to the degradation of the sample.…”

“…The analysis conditions were maintained at 37°C under a 5% CO 2 atmosphere, in an incubator (PANASONIC, COM-19AIC-PA model) for 3 and 7 days. 16,17 McCoy's medium was replaced every 3 days to avoid any changes in the cationic concentration that occur due to the degradation of the sample. After that, the pellets were washed with de-ionized water, dry for 24 h at 37°C and then analyzed by SEM.…”

Análisis cualitativo y cuantitativo de fosfatos de calcio por difracción de rayos-X mediante los métodos de Scherrer, Williamson-Hall y refinamiento de Rietveld

“…Algunos de ellos son ampliamente utilizados como recubrimiento para implantes óseos debido a su similitud con el hueso, biocompatibilidad y osteoconductividad [2]. Los enlaces químicos entre el hueso y estos recubrimientos permiten que los implantes metálicos de materiales como acero inoxidable y aleaciones de titanio adquieran una superficie bioactiva y se disminuya el riego de rechazo del implante por parte del cuerpo [3,4]. Debido a su potencial en diversas aplicaciones biomédicas se ha desarrollado diversos estudios acerca de distintos métodos de síntesis.…”