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Details van artikel 7 van 9 gevonden artikelen
| Titel: |
Mechanical properties of calcium sulphate/hydroxyapatite cement |
| Auteur: |
Lei, Dang Wardlaw, D. Hukins, D.W.L. |
| Verschenen in: |
Bio-medical materials and engineering |
| Paginering: | Jaargang 16 (2006) nr. 6 pagina's 423-428 |
| Jaar: |
2006-11-15 |
| Inhoud: |
Setting times, volume after setting, injectability and hardness (at 37°C in contact with Ringer's solution) were determined for cements made of mixtures of calcium sulphate hemihydrate (CS) and hydroxyapatite (HA) with a range of compositions. The purpose of these experiments was to determine the behaviour of a mixture that could be used as an injectable cement for orthopaedic applications, including spinal fusion. A suitable mixture consisted of 60% CS and 40% HA by mass; a slurry was made by mixing solid (36 g) with water (15 cm3). The slurry had initial and final setting times of 5.7±1.3 min and 19.6±0.7 min (mean ± standard deviation), respectively. The hardness of the cement did not systematically increase or decrease in the 72 h following the final setting time. The volume of the cement was 99.8±0.4% of the volume of the initial slurry, i.e. there was negligible shrinkage on setting. It was able to withstand a pressure of 7.3±1.2 MPa, applied by a hemispherical indenter before the onset of permanent damage, indicating adequate strength for spinal fusion. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 9 gevonden artikelen
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