RADIO-OPAQUE MATERIALS BASED ON HYDROXYAPATITE AND BISMUTH

Hydroxyapatite based ceramic materials

Hydroxyapatite is the major mineral component of human bones. From the point of view of its chemistry, it is calcium orthophosphate which has in its structure hydroxyl groups and in its stoichiometric is described with formula – Ca10(PO4)6(OH)2. Biological properties of hydroxyapatite are very favorable; it is not only biocompatible (which means that after implantation it causes no side effects...

Radio - opaque punctate

Hydroxyapatite-Based Materials: Synthesis and Characterization

The use of foreign materials to be used as implants within or outside the human body is not new. There are reports of more than 2000 years old which indicate the replacement of bone material in order to repair seriously damaged tissues. In the mid-nineteenth century it was attempted to repair human body parts using the materials available according to the technological advance of the time, unfo...

Porous hydroxyapatite-based obturation materials for dentistry

New porous biomaterials based on hydroxyapatite (HAp) were designed as obturation materials for dental cavities. Synthetic HAp powder with a particle diameter of 150 m was agglutinated using three different polyurethane monocomponents (rigid, semi-rigid, and flexible), enabling the matching of their properties to those of real teeth. Alumina particles were also added in some cases. Our new hybr...

Synthesis and Characterization of Ga-Doped Bismuth Based Superconducting Materials

A series of bismuth based superconducting materials doped with galliumBi Pb Sr Ca Cu Ga O 1.7 0.4 2 2 3-x x y (x = 0.0, 0.02, 0.04, 0.06, 0.08 and 0.10) was synthesized by Simple solid-state reaction method. The samples were characterized by X-ray diffraction, EDX analysis and electrical resistivity and ac magnetic susceptibility measurements. All the samples consist of both low-T (2212) and Hi...