Carbonate apatite formation during the setting reaction of apatite cement

Arief Cahyanto, Kanji Tsuru, Kunio Ishikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Replacement of apatite cement (AC) to bone is still controversial issue. To understand factor that could affect the replacement of AC to bone, AC consisting of an equimolar mixture of tetracalcium phosphate (TTCP; Ca 4(PO4)2O) and dicalcium phosphate anhydrous (DCPA; CaHPO4) was allowed to set at 37°C and 100% relative humidity under 5% CO2 or N2. Carbonate apatite (CO 3Ap) was formed when AC was allowed to set under 5% CO2. The amount of CO3 decreased gradually as the depth from the surface increased. The CO3Ap was the B-type CO3Ap in which CO 3 2- was replaced with PO4 3- and the CO3Ap found in bone. Larger amount of TTCP remain unreacted when the AC was allowed to set under N2 whereas smaller amount of TTCP remain unreacted when the AC was allowed to set under CO2. This may be caused by the larger Ca/P molar ratio of CO3Ap. Formation of CO 3Ap and/or small unreacted TTCP are thought to be key factors for the replacement of AC to bone.

Original languageEnglish
Title of host publicationAdvances in Bioceramics and Porous Ceramics V - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Pages7-10
Number of pages4
Volume33
Edition6
Publication statusPublished - 2013
EventAdvances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 - Daytona Beach, FL, United States
Duration: Jan 22 2012Jan 27 2012

Other

OtherAdvances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
CountryUnited States
CityDaytona Beach, FL
Period1/22/121/27/12

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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    Cahyanto, A., Tsuru, K., & Ishikawa, K. (2013). Carbonate apatite formation during the setting reaction of apatite cement. In Advances in Bioceramics and Porous Ceramics V - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 (6 ed., Vol. 33, pp. 7-10)