Effect of yttria addition on mechanical, physical and biological properties of bioactive MgO–CaO–SiO ₂ –P ₂ O ₅ –CaF ₂ glass ceramic

Abstract

Preparation of the bioactive MgO-CaO-SiO2-P2O5-CaF2 glass was carried out utilizing tap casting and powder metallurgy methods. The original composition was modified with 0.2% Y2O3 and carbon additions. The mother and the modified bioglass were examined, and comparative studies were performed between the mother and modified type to study the compositional modification effects on physical, mechanical and biological properties. The histology of mother type showed that this type has a good biocompatibility with no rejection or inflammation reaction with the host bone, and new bone generation and formation were shown in the region of implant. The modification with 0.2% Y2O3 achieved a good improvement in the mechanical properties when compared with the mother system. The histology of this type showed a normal acceptance with no inflammation reactions. On the other hand, the modification with carbon achieved a superior improvement in the mechanical properties compared to the mother bioglass and showed a good acceptance with no inflammation reactions with the host body as well.

Influence of Different Surface Machining Treatments of Magnesium‐based Resorbable Implants on the Degradation Behavior in Rabbits

“…[16,22,28,31] Different studies concentrate on the twocomponent alloy system magnesium-calcium; they basically report on the constant corrosion rate and the possibility to adjust the corrosion, the biomechanical properties, and the biocompatibility by alloying different amounts of calcium. [28,[32][33][34][35] An adjustable and constant corrosion seems to be required to predict the period of degradation and to estimate the tissue reactions due to degradation products.…”

Synthesis and characterisation of porous luminescent glass ceramic scaffolds containing europium for bone tissue engineering

“…5 Different metal ions, such as Zn, Co, Cu, Sr, Ag, Ti, La, Ce, B, In, Ga and Y, have been added in bioactive glasses or glass ceramics to achieve different aims. [7][8][9][10][11][12][13] This topic was well reviewed by Hoppe et al and Habibovic et al 6,14 Nevertheless, there are only a few reports on Eu doped bioactive glasses and glass ceramics to our knowledge. But according to the results from previous studies, the incorporation of Eu to biomaterials has great potential for using in the biomedical field.…”

“…Thus, improved mechanical properties can be expected as the results of the substitution of rare earth for CaO in the glass ceramics. 10,13 Thirdly, but not lastly, Eu 3z ions fluoresce well a red colour and have been utilised extensively in colour televisions and high efficiency fluorescent lamps. 18 Recently, much attention has been attracted on applying its luminescent property in biomedical field.…”

Functionalizing Ti-Surfaces through the EPD of Hydroxyapatite/NanoY2O3

“…HA is usually employed for this application because its chemical composition is similar to that of the mineral phase of natural bone. , Because of the inferior mechanical behavior of HA, efforts have been devoted to the development of composites, with a focus on improving the physical, mechanical, and biological properties of these materials. Recent studies have demonstrated that the addition of Y 2 O 3 to HA improves the mechanical behavior of the composite materials while maintaining good biocompatibility. − The incorporation of Y 2 O 3 dispersed into the HA favors the sintering process and controls the decomposition mechanisms of HA into calcium phosphates, which makes HA + Y 2 O 3 composites promising materials for orthopedic metallic implant coatings with improved mechanical and functional properties.…”