1. LOW CRYSTALLINITY NANOHYDROXYAPATITE PREPARED AT ROOM TEMPERATURE . Authors: MARIA TOMOAIA-COTISEL, OSSI HOROVITZ, IOAN PETEAN, LUCIA TIMIS, CORINA GARBO, REKA BALINT, AURORA MOCANU.2. PORTLAND CEMENT ENRICHED WITH HYDROXYAPATITE FOR ENDODONTIC APPLICATIONS. Authors: ALEXANDRA AVRAM, MARIA GOREA, REKA BALINT, LUCIA TIMIS, STEFAN JITARU, AURORA MOCANU, MARIA TOMOAIA-COTISEL.