Carbonate apatite formation during the setting reaction of apatite cement

Arief Cahyanto; Kanji Tsuru; Kunio Ishikawa

Carbonate apatite formation during the setting reaction of apatite cement

Arief Cahyanto, Kanji Tsuru, Kunio Ishikawa

Oral Rehabilitation

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Advances in Bioceramics and Porous Ceramics V - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Pages	7-10
Number of pages	4
Volume	33
Edition	6
Publication status	Published - 2013
Event	Advances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 - Daytona Beach, FL, United States Duration: Jan 22 2012 → Jan 27 2012

Other

Other	Advances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Country	United States
City	Daytona Beach, FL
Period	1/22/12 → 1/27/12

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)

Carbonate apatite formation during the setting reaction of apatite cement. / Cahyanto, Arief; Tsuru, Kanji; Ishikawa, Kunio.

Advances in Bioceramics and Porous Ceramics V - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012. Vol. 33 6. ed. 2013. p. 7-10.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 edn, vol. 33, pp. 7-10, Advances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012, Daytona Beach, FL, United States, 1/22/12.

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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.",

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N2 - 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.

AB - 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.

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