Thermoluminescence of Fluoridated Hydroxyapatite Prepared from α and β-Tricalucium Bis (Orthophosphate)

Abstract

The thermoluminescence characteristics of fluoridated hydroxyapatite (FHAp) having various fluoride contents have been investigated. The FHAp samples were prepared from reaction of α or β-tricalcium Bis (orthophosphate) (α-TCP or β-TCP) with NH₄F. TL peaks of FHAp heated at 700°C were observed at 90°C and 190°C, and the 90°C peak was higher than the 190°C peak. The TL peak intensity increased with the fluoride contents in FHAp. The TL peak intensity of FHAp from α-TCP was higher than that from β-TCP. The intensity of TL peak increased linearly up to about 1.8C/kg for X-ray irradiation.