Preparation and characterization of Porous Octacalcium Phosphate Setting Improved by α-Tricalcium Phospate Additive

• NAKANO Yumiko

  Department of Pediatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University

Bibliographic Information

Other Title

• α型リン酸三カルシウムを添加した多孔質リン酸八カルシウム硬化体の作製と材料学的評価

Abstract

Octacalcium phosphate (OCP) setting for dental applications was prepared by mixing monocalcium phosphate monohydrate and calcium carbonate with sodium hydrogen phosphate buffer (pH=7.4). The OCP setting was improved in its mechanical properties by the addition 0f α-tricalcium phosphate (α-TCP). The setting with 69.0nass% α-TCP had a maximal compressive strength of 12.0MPa which was about 7 times higher than that of the α-TCP free setting at 7 days after mixing. Based on the data shown by SEM, the significant improvement was attributed to both the decreasing porosity induced by the increase in direct connection between the grains and the uniformity in its microstructure. The OCP setting with 69.0 mass% α-TCP transformed into brushite (DCPD) 1 day after mixing in simulated body fluid, and changed into the OCP and HAp at 6 weeks after mixing. The OCP setting with 69.0 mass% α-TCP was suggestted to be applicable to endodontic treatment in dentistry.

Journal

• The Journal of the Japanese Society for Dental Materials and Devices

  The Journal of the Japanese Society for Dental Materials and Devices 19 (1), 65-76, 2000-01-25

  The Japanese Society for Dental Materials and Devices

Keywords

• Octacalcium phosphate
• Aptite
• Mechanical property
• Setting reaction

Details

• CRID: 1390001288084571008
• NII Article ID: 110002989171
• NII Article ID: 10010612228
• NII Book ID: AN00127279
• DOI: 10.18939/jjdm.19.1_65
• ISSN: 21884188
• ISSN: 02865858
• Web Site: https://search.jamas.or.jp/link/ui/2000163387
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed