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- Title
Effect of precursor's solubility on the mechanical property of hydroxyapatite formed by dissolution-precipitation reaction of tricalcium phosphate.
- Authors
AHMAD, Nurazreena; TSURU, Kanji; MUNAR, Melvin L.; MARUTA, Michito; MATSUYA, Shigeki; ISHIKAWA, Kunio
- Abstract
The effect of the solubility of the precursors, alpha tricalcium phosphate (a-TCP) and beta tricalcium phosphate (ß-TCP) on the mechanical strength of hydroxyapatite (HAp) bone substitute was investigated. Uniaxially pressed block starting from these precursors were treated hydrothermally with 1 mol/L of ammonia solution at 200°C for various durations. XED analysis revealed that a-TCP block took 3 h whereas ß-TCP block took 240 h for complete transformation to HAp. The porosity of HAp obtained from ß-TCP block was found to be lower than that of HAp from a-TCP block. Diametral tensile strength of HAp from ß-TCP block showed a significantly higher value than that of HAp from a-TCP block. It is therefore concluded that solubility of precursor affects the mechanical strength of the HAp block.
- Subjects
HYDROXYAPATITE; DISSOLUTION (Chemistry); PRECIPITATION (Chemistry); CALCIUM phosphate; SOLUBILITY; MECHANICAL behavior of materials; AMMONIA; TENSILE strength
- Publication
Dental Materials Journal, 2012, Vol 31, Issue 6, p995
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2012-176