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1999 Fiscal Year Final Research Report Summary

Initial solubility and durability of polymeric calcium phosphate cements

Research Project

Project/Area Number 10671792
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Conservative dentistry
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

MATSUYA Yoko  Kyushu Univ., Dentistry, Research Associate, 歯学部, 助手 (50128097)

Co-Investigator(Kenkyū-buntansha) MIZUKAMI Akane  Kyushu Univ., Dentistry, Research Associate, 歯学部, 助手 (90304815)
UNEMORI Masako  Kyushu Univ., Dentistry, Research Associate, 歯学部, 助手 (90136490)
AKAMINE Akifumi  Kyushu Univ., Dentistry, Professor, 歯学部, 教授 (00117053)
Project Period (FY) 1998 – 1999
Keywordstetracalcium phosphate / poly (methyl vinyl ether-maleic acid) / poly (acrylic acid) / cement / hydroxyapatite / α-tricalcium phosphate cements / initial solubility / durability
Research Abstract

Mechanical strength and in vitro durability of four experimental and two commercial calcium phosphate dental cements were assessed. Hydroxyapatite formation processes in these calcium phosphate cements were also examined by means of x-ray diffraction analysis and their relationship with mechanical strength was discussed. The hydroxyapatite-forming polymeric calcium phosphate cements prepared from medium and fine tetracalcium phosphate powder and poly (methyl vinyl ether-maleic acid) showed lower compressive strength and higher flexural strength than the teracalcium phosphate cement prepared using poly (acrylic acid) and non hydroxyapatite-forming commercial α-tricalcium phosphate cements. The hydroxyapatite formation seemed to correspond to lowering in compressive strength of the cements based on tetracalcium phosphate and poly (methyl vinyl ether-maleic acid), while, in the case of the cement based on tetracalcium phosphate and poly (acrylic acid), no relationship was observed between the hydroxyapatite formation and the compressive strength. The hydroxyapatite-forming polymeric cements prepared using finely ground tetracalcium phosphate powder showed enhanced strength, even after prolonged immersion in water, compared to similar cements derived from the large sized tetracalcium phosphate. Initial solubility of both the experimental polymeric calcium phosphate cements seemed to be lower than that of the commercial calcium phosphate cements, which were prepared using organic acids.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Matsuya Y.: "Effect of power grinding on hydroxyapatite formation in a polymeric cacium phosphate cement prepared from tetracalcium phosphate and poly(methyl vinyl ether-maleic acid)"Biomaterials. 20. 691-697 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akashi A.: "Release profile of the antibiotic from the dental a-tricalcium phosphate cements"Proceedings of 12th International Symposium on Ceramics in Medicine. 12. 563-567 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuya S.: "Structure of bioactive glass and its application to glass ionomer cement"Dental Materials Journal. 18. 155-166 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 明石あかね: "光硬化型グラスアイオノマーセメントの吸水について"日本歯科保存学雑誌. 41. 565-571 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akashi A: "The relationship between water absorption characteristics and the mechanical strength of resin-modified glass-ionomer cements in long-term water storage"Biomaterials. 20. 1573-1578 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuya S.: "Effect of fluoride on apatite formation from Ca_< 4> (PO_< 4>)_< 2> O in 0.1 mol L^< -1> KH_< 2> PO_< 4>"J Materials Science: Materials in Medicine. 9. 325-331 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuya Y., Matsuya S., Antonucci J. M., Takagi S., Chow L. C., Akamine A.: "Effect of powder grinding on hydroxyapatite formation in a polymeric calcium phosphate cement prepared from tetracalcium phosphate and poly (methyl vinyl ether-maleic acid)"Biomaterials. 20. 691-697 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akashi A., Matsuya Y., Unemori M., Akamine A.: "Release profile of the antibiotic from the dental α-tricalcium phosphate cements"Proceedings of 12th International Symposium on Ceramics in Medicine. 12. 563-567 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuya S., Matsuya Y., Ohta M.: "Structure of bioactive glass and its application to glass ionomer cement"Dental Materials Journal. 18-2. 155-166 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akashi A., Matsuya Y., Unemori M., Akamine A.: "The relationship between water absorption characteristics and the mechanical strength of resin-modified glass-ionomer cements in long-term water storage"Biomaterials. 20. 1573-1578 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuya S., Matsuya Y., Takagi S., Chow L. C.: "Effect of fluoride on apatite formation from CaィイD24ィエD2(POィイD24ィエD2)ィイD22ィエD2O in 0.1 mol LィイD1-1ィエD1 KHィイD22ィエD2POィイD24ィエD2"J Materials Science : Materials in Medicine. 9. 325-331 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akashi A., Matsuya Y., Unemori M., Akamine A.: "Water sorption characteristics of light-cured glass-ionomer cements"The Japanese Journal of Conservative Dentistry. 41-3. 565-571 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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