Preparation and Enhancement of ( Hydroxyapatite/Bioactive glass) Composite by Mg Nanowires for Dental and Bone Implants

In the subject of the research under the current study, a composite resin consisting of (30% bioactive glass with 70% hydroxyapatite) was used, and this is compatible with the components of the bone tissue of the tooth. After many studies have proven the failure of the use of inert materials in the composition of the composite resin used in orthopedic applications and dental implants, the using of bioactive materials such as bioactive glass has been resorted as it has proven its bond with living tissues in addition to having an anti-bacterial property on the one hand, and on the other hand it is a compatible material biologically. In this study, some mechanical and physical properties of the composite resin were improved by adding weight percentages of a nano-material, magnesium nanowire, at rates (0-4) %. Some of the techniques that were used, such as X-ray diffraction examination to find out the components of the composite resin from bioactive glass and hydroxyapatite, in addition to the scanning electron microscope examination and through it the good distribution of magnesium nanowire material was observed in the composite resin, where the examination shows the homogeneous distribution and full of pores in the composition. By analyzing the results of the research, it can be observed that the compressive strength property improved at 4% magnesium nanowire (208 MPa) and (50 MPa) at 0% magnesium nanowire. Also, an improvement in the wear rate, as the weight loss values decreased with the increase in the percentage of the nano-added material, and the best value was at 4% magnesium nanowire. As for the thermal conductivity property, its best values were at the highest value of the addition of the strengthening material, and all values were within the permissible range for clinical dental implant applications. As for the examination of the micro-hardness, it was decreasing as the values of addition increased until it reached the lowest hardness at 4% and the highest values of hardness at 0%, which is also within a close range and is allowed in dental implant applications.