Paper Information

Title: 

PREPARATION AND EVALUATION OF APATITIC CALCIUM PHOSPHATE CEMENT

Type: PAPER
Author(s): HESARAKI SAEED*,MOZTARZADEH FATOLLAH,NOJEDEHIAN HANIEH,ZAMANIAN ALI,RABIEE SEYED MAHMOOD
 
 *BIOMEDICAL ENGINEERING FACULTY OF AMIRKABIR UNIVERSITY OF TECHNOLOGY
 
Name of Seminar: IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING
Type of Seminar:  CONFERENCE
Sponsor:  ANJOMANE MOHANDESI PEZESHKI IRAN
Date:  2004Volume 11
 
 
Abstract: 

CALCIUM PHOSPHATE CEMENTS ARE WIDELY USE IN DENTISTRY AND MEDICINE AS PULP CAPPING, ROOT CANAL SEALER, BONE TISSUE ENGINEERING SCAFFOLD, DRUG DELIVERY SYSTEMS, BONE FILLER AND SO ON. TTCP/DCPA BASED CALCIUM PHOSPHATE CEMENT WAS STUDIED IN THIS RESEARCH. THE LIQUID OF CEMENT IS A SOLUTION OF 2.5% NA2HPO4. X-RAY DIFFRACTION PATTERN OF THE CEMENT SHOWED HA AS A MAIN FINAL PHASE IN ITS MASS. THE INITIAL AND FINAL SETTING TIMES ARE 7 AND 15 MIN. RESPECTIVELY AND COMPRESSIVE STRENGTH IS 12 MPA. ALSO CEMENT SHOWS SMALL SHRINKAGE AFTER SETTING (ABOUT 2%) AND HAS 31% TOTAL POROSITY. HA WHISKER CRYSTALS, UNREACTED TETRA CALCIUM PHOSPHATE PARTICLES AND MICROPORES WERE OBSERVED IN CEMENT MICROSTRUCTURE USING SEM. THE VALUE OF CA/P DETERMINED BY ELECTRON DISPERSIVE X- RAY (EDAX) WAS 1.69 THAT IS CORRESPOND TO HYDROXYAPATITE.

 
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