Per: Marvin do NAscimento (instituto militar de engenharia), carlos henrique da luz barbosa (INSTITUTO MILITAR DE ENGENHARIA), Samuel Soares Ferber (INSTITUTO MILITAR DE ENGENHARIA), julianna magalhães garcia (INSTITUTO MILITAR DE ENGENHARIA), marcelo henrique prado da silva (INSTITUTO MILITAR DE ENGENHARIA)
Abstract:
Magnesium silicate is a promising ceramic biomaterial for medical applications due to its biocompatible and bioactive properties. Compared to hydroxyapatite (HA), which is widely used in orthopedics and dentistry, magnesium silicate offers additional advantages by including magnesium and silicon ions that stimulate collagen fiber production, biomineralization, and stabilize the bone structure. The polymorphic forms of magnesium silicate, such as forsterite (Mg2SiO4) and enstatite (MgSiO3), have orthorhombic or monoclinic crystal structures, which influence their biological and physical properties. The addition of HA, niobia (Nb2O5), and zinc oxide (ZnO) to magnesium silicate can enhance its properties, creating composites with increased bioactivity, mechanical strength, and antimicrobial properties. HA, with its hexagonal structure, improves bioactivity and osteoconduction, while Nb2O5, with its orthorhombic structure, increases strength and thermal stability. ZnO, with its hexagonal wurtzite structure, adds antimicrobial properties and improves the hardness of the composite. The objective of this work is to analyze the magnesium silicate ceramic composites with added hydroxyapatite, niobia, and zinc oxide through X-ray diffraction.