Zinc-Containing Calcium Phosphate Ceramics with a (Ca+Zn)/P Molar Ratio of 1.67

Yu Sogo; Atsuo Ito; Koshiro Fukasawa; Tokoha Sakurai; Noboru Ichinose; Racquel Z. LeGeros

doi:10.4028/www.scientific.net/KEM.284-286.31

Paper Titles

A Rapid Setting TTCP-DCPD Cement. Study of the Setting Reaction as a Function of Time
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Stearate Salts as Brushite Bone Cement Setting Retardants
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Influence of Particle Size on DCPD Hydrolysis and Setting Properties of TTCP/DCPD Cement
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Whitening and Deodorization Ability by Peroxide and Hydroxyapatite Compound
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Zinc-Containing Calcium Phosphate Ceramics with a (Ca+Zn)/P Molar Ratio of 1.67
p.31

The Effect of Hydroxyapatite on the Remineralization of Dental Fissure Sealant
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HAp Protein Composites Formed by Hydrolysis of α-TCP
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XRD, SEM/EDX and FTIR Characterization of Brazilian Natural Coral
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Effect of Some Physical-Chemical Variables in the Synthesis of Hydroxyapatite by the Precipitation Route
p.47

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Zinc-Containing Calcium Phosphate Ceramics with a (Ca+Zn)/P Molar Ratio of 1.67

Abstract:

Zinc-containing calcium phosphate ceramics with a (Ca+Zn)/P molar ratio of 1.67 (ZnHAP ceramics) were synthesized to clarify the main phase for zinc release. ZnHAP ceramics with a zinc content at or more than 0.20 wt% contained zinc-containing tricalcium phosphate. The ion activity product of monophasic ZnHAP ceramic containing at or less than 0.13 wt% of zinc corresponded to that of pure HAP ceramic. The presence of tricalcium phosphate (TCP) phases was necessary condition for ZnHAP ceramics to release zinc. The coexistence of TCP phases in the ZnHAP ceramics meant that a phase with a (Ca+Zn)/P molar ratio higher than 1.67 also coexisted. Although the phase was assumed to be zinc oxide, zinc was not concentrated anywhere in the ZnHAP ceramics including grain boundaries.