骨補填材としての球状ハイドロキシアパタイトからのCaイオンの溶出

抄録

This study was performed to investigate release of Ca ion from non-crystal calcium phosphate using the specimen which underwent heating at 800℃,1000℃, and 1100℃. The quantity of Ca ion and pH value was measured 1 day, 1 week, 2 weeks, 4 weeks and 8 weeks after immersion. The main results were as follows:
1. Non-crystal calcium phosphate showed the maximum amount of release for calcium ion.
2. Sintering of Hydroxyapatite at 1100℃ showed maximum amount of release for calcium ion.
3. By increasing the immersion, amount of Ca ion was decreased.
4. Relationship between amount of Ca ion and pH value was not clear.
5. Non-crystal calcium phosphate heated at 1000℃ and 1100℃ was identified as well-crystallized Hydroxyapatite.
6. Non-crystal calcium phosphate heated at 1000℃ and 1100℃ was observed as crystals on the surface of powder.