Thermal and electrical conductivities of bio-ceramic amalgams based on hydroxyapatite doped by low metal (Co, Ni, Cu, Mn) concentration for dental and orthopedic engineering

Abstract

This work is a continuous study on structural and vibrational study of Hydroxyapatite bio-ceramic pigments with chromophore ions (Co2+, Ni2+, Cu2+, Mn2+) [1] that show a good matric structure after metal ions incorporations. In this study, we reported thermal and electrical conductivities of same previous materials in order to use them as bio ceramic amalgam for dental prosthesis and try to solve tooth damage after partial remove or carries. Hydroxyapatite powders doped with metal ions were characterized by, UV-visible spectroscopy to determinate the optoelectronic properties of all samples. The results show that the incorporation of the metal ions into the hydroxyapatite has an influence on the gap energy, which affect an increase on electrical conductivity up to 130% and thermal conductivity up to 140% in our elaborated samples. The result of this work concerned the orthopedic application since the hydroxyapatite is also a major constituent in mineral part of bones.