Effects of thermal treatment on injectability and basic properties of apatite cement containing spherical tetracalcium phosphate made with plasma melting method

Kunio Ishikawa, Akari Takeuchi, Yumiko Suzuki, Kiyoshi Koyano

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have previously prepared spherical-shaped tetracalcium phosphate (s-TTCP) with plasma melting method. We found that apatite cement (AC) containing s-TTCP showed excellent injectability from syringe and handling property when compared with AC that contained irregular-shaped TTCP (i-TTCP). However, transformation of AC containing s-TTCP (s-AC) to apatitic mineral was suppressed and thus mechanical strength of set s-AC was low. In the present study, thermal treatment was attempted on s-TTCP to convert heat decomposition products formed in s-TTCP during plasma melting process to TTCP. X-ray diffraction (XRD) analysis revealed that some heat decomposition products in s-TTCP converted to TTCP when s-TTCP was heated at 1,500°C for four hours and quenched at room temperature (q-TTCP). AC containing q-TTCP transformed to apatitic monolith and showed equivalent mechanical strength similar to AC that contained i-TTCP -without sacrificing excellent injectability from syringe and handling property. Based on these findings, we concluded that AC containing q-TTCP would benefit patients since it delivered excellent injectability without sacrificing basic setting properties of AC.

Original languageEnglish
Pages (from-to)63-67
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume116
Issue number1349
DOIs
Publication statusPublished - Jan 2008

Fingerprint

Apatites
Apatite
apatites
cements
phosphates
Cements
Phosphates
Melting
Heat treatment
melting
Plasmas
syringes
Syringes
Strength of materials
Decomposition
tetracalcium phosphate
decomposition
heat
products
X ray diffraction analysis

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

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title = "Effects of thermal treatment on injectability and basic properties of apatite cement containing spherical tetracalcium phosphate made with plasma melting method",
abstract = "We have previously prepared spherical-shaped tetracalcium phosphate (s-TTCP) with plasma melting method. We found that apatite cement (AC) containing s-TTCP showed excellent injectability from syringe and handling property when compared with AC that contained irregular-shaped TTCP (i-TTCP). However, transformation of AC containing s-TTCP (s-AC) to apatitic mineral was suppressed and thus mechanical strength of set s-AC was low. In the present study, thermal treatment was attempted on s-TTCP to convert heat decomposition products formed in s-TTCP during plasma melting process to TTCP. X-ray diffraction (XRD) analysis revealed that some heat decomposition products in s-TTCP converted to TTCP when s-TTCP was heated at 1,500°C for four hours and quenched at room temperature (q-TTCP). AC containing q-TTCP transformed to apatitic monolith and showed equivalent mechanical strength similar to AC that contained i-TTCP -without sacrificing excellent injectability from syringe and handling property. Based on these findings, we concluded that AC containing q-TTCP would benefit patients since it delivered excellent injectability without sacrificing basic setting properties of AC.",
author = "Kunio Ishikawa and Akari Takeuchi and Yumiko Suzuki and Kiyoshi Koyano",
year = "2008",
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AU - Ishikawa, Kunio

AU - Takeuchi, Akari

AU - Suzuki, Yumiko

AU - Koyano, Kiyoshi

PY - 2008/1

Y1 - 2008/1

N2 - We have previously prepared spherical-shaped tetracalcium phosphate (s-TTCP) with plasma melting method. We found that apatite cement (AC) containing s-TTCP showed excellent injectability from syringe and handling property when compared with AC that contained irregular-shaped TTCP (i-TTCP). However, transformation of AC containing s-TTCP (s-AC) to apatitic mineral was suppressed and thus mechanical strength of set s-AC was low. In the present study, thermal treatment was attempted on s-TTCP to convert heat decomposition products formed in s-TTCP during plasma melting process to TTCP. X-ray diffraction (XRD) analysis revealed that some heat decomposition products in s-TTCP converted to TTCP when s-TTCP was heated at 1,500°C for four hours and quenched at room temperature (q-TTCP). AC containing q-TTCP transformed to apatitic monolith and showed equivalent mechanical strength similar to AC that contained i-TTCP -without sacrificing excellent injectability from syringe and handling property. Based on these findings, we concluded that AC containing q-TTCP would benefit patients since it delivered excellent injectability without sacrificing basic setting properties of AC.

AB - We have previously prepared spherical-shaped tetracalcium phosphate (s-TTCP) with plasma melting method. We found that apatite cement (AC) containing s-TTCP showed excellent injectability from syringe and handling property when compared with AC that contained irregular-shaped TTCP (i-TTCP). However, transformation of AC containing s-TTCP (s-AC) to apatitic mineral was suppressed and thus mechanical strength of set s-AC was low. In the present study, thermal treatment was attempted on s-TTCP to convert heat decomposition products formed in s-TTCP during plasma melting process to TTCP. X-ray diffraction (XRD) analysis revealed that some heat decomposition products in s-TTCP converted to TTCP when s-TTCP was heated at 1,500°C for four hours and quenched at room temperature (q-TTCP). AC containing q-TTCP transformed to apatitic monolith and showed equivalent mechanical strength similar to AC that contained i-TTCP -without sacrificing excellent injectability from syringe and handling property. Based on these findings, we concluded that AC containing q-TTCP would benefit patients since it delivered excellent injectability without sacrificing basic setting properties of AC.

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