Evaluation of the dynamic behavior, elastic properties, and in vitro bioactivity of some borophosphosilicate glasses for orthopedic applications

The present work employed the finite element model (FEM) to predict the influence of successive increases in borate (B2O3) contents, from 0 to 25 mol%, on mechanical properties and dynamic behavior. By feeding the isotropic elasticity characteristics of the phosphosilicate glass to the model, such as Young's modulus, density, and maximum compressive stress of the produced glass samples to fit the aim of their clinical use. The effect of successive addition of B(2)O(3 & nbsp;)on the in vitro bioactivity of the examined glasses in addition to examined after being dipped in simulated body fluid (SBF) at different times. Moreover, tracking the formation of hydroxyapatite (HA)-like layers on their surfaces using X-ray diffraction technique (XRD) technique and scanning electron mi-croscopy (SEM). The results obtained indicated that increasing B(2)O(3 & nbsp;)content to 25% was responsible for improving the deflect resistance by 39%.On the other hand, neither shear stress nor principles stress was affected by this increase in B(2)O(3 & nbsp;)content. Moreover, the gradual increases in B(2)O(3 & nbsp;)contents were very helpful in improving the bioactivity of the samples. The prepared glasses can be successfully used in bone replacement applications from these promising results.

Automated summary

This study used finite element modeling to predict the effects of increasing borate content on mechanical properties and dynamic behavior. The results showed that increasing borate content improved the deflect resistance of the glass samples by 39%, while shear stress and principle stress were not affected. Gradual increases in borate content also improved the bioactivity of the samples.