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Title: Investigations on the dynamics of water in structural dentine
Authors: Rnfique, A.
Kishen, A. 
Issue Date: 2006
Citation: Rnfique, A., Kishen, A. (2006). Investigations on the dynamics of water in structural dentine. Progress in Biomedical Optics and Imaging - Proceedings of SPIE 6137 : -. ScholarBank@NUS Repository.
Abstract: The aim of this study was two fold: (1) to investigate the nature and degree of water loss at 21°C (dehydration) and relate these findings with (2) strains produced in dentine structure during water loss and regain. The nature and degree of water loss was investigated using Nuclear-Magnetic Resonance Spectroscopy and gravimetric analysis. Digital Moiré Interferometry (DMI) was used to study the patterns of strain distribution during water-loss (dehydration) and water-regain (rehydration) at 21°C. The gravimetric analysis showed that dentine exhibited a biphasic response in water-loss. An initial rapid phase followed by a gradual and steady phase. DMI showed that dehydration induced strains were formed within dentine in three phases. These experiments highlighted that the major portion of free water from dentine was lost rapidly from the surface and the dentinal tubules, as soon as they are exposed to 21°C (55% RH). DMI showed that dehydration produced strains in the dentine structure after an initial latent period. Rehydration caused almost complete reversal of the dehydration induced water-loss and strains.
Source Title: Progress in Biomedical Optics and Imaging - Proceedings of SPIE
ISBN: 0819461806
ISSN: 16057422
DOI: 10.1117/12.640149
Appears in Collections:Staff Publications

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