Please use this identifier to cite or link to this item:
|Title:||Effect of chitosan/riboflavin modification on resin/dentin interface: Spectroscopic and microscopic investigations||Authors:||Daood, U.
|Issue Date:||Jul-2013||Citation:||Daood, U., Iqbal, K., Nitisusanta, L.I., Fawzy, A.S. (2013-07). Effect of chitosan/riboflavin modification on resin/dentin interface: Spectroscopic and microscopic investigations. Journal of Biomedical Materials Research - Part A 101 A (7) : 1846-1856. ScholarBank@NUS Repository. https://doi.org/10.1002/jbm.a.34482||Abstract:||The aim of this study is to investigate the morphological and chemical changes of demineralized dentin collagen-matrix and resin/dentin interface associated with chitosan/riboflavin modification. Dentin disc specimens were prepared from sound molars, acid-etched with 35% phosphoric acid and modified with either 0.1% riboflavin or chitosan/riboflavin (Ch/RF ratios 1:4 or 1:1) and photo-activated by UVA. Morphological and chemical changes associated with surface modification were characterized by SEM and micro-Raman spectroscopy. Dentin surfaces of sound molars were exposed, acid-etched, and modified as described before. Etch-and-rinse dentin adhesive was applied, light-cured, and layered with resin-restorative composite. The resin infiltration and resin/dentin interface were characterized by micro-Raman spectroscopy and SEM. An open-intact collagen network-structure, formation of uniform hybrid-layer and higher resin infiltration were found with 0.1%RF and Ch/RF 1:4 modifications. Raman analysis revealed chemical changes and shifts in Amide bands with the modification of dentin collagen-matrix. The use of riboflavin and chitosan/riboflavin formulations to modify dentin-collagen matrix, with the defined ratios, stabilizes the collagen fibrillar network and enhances resin infiltration and hybrid layer formation. These preliminary results are encouraging for subsequent consideration of chitosan/riboflavin modification in adhesive dentistry. Copyright © 2012 Wiley Periodicals, Inc.||Source Title:||Journal of Biomedical Materials Research - Part A||URI:||http://scholarbank.nus.edu.sg/handle/10635/79889||ISSN:||15493296||DOI:||10.1002/jbm.a.34482|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 6, 2019
WEB OF SCIENCETM
checked on Dec 6, 2019
checked on Dec 1, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.