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Structure of dental glass-ionomer cements by confocal fluorescence microscopy and stereomicroscopy

Paper ID Volume ID Publish Year Pages File Format Full-Text
13802 909 2001 6 PDF Available
Title
Structure of dental glass-ionomer cements by confocal fluorescence microscopy and stereomicroscopy
Abstract

The microstructure of four cements, setting by different mechanisms (acid–base, dual cure, triple cure), was studied. The porosity of unpolymerized materials was detected by stereomicroscopy. After polymerization and storage in water or lactic acid solution, the porosity, filler distribution and gel layer, which was formed at the filler/matrix interface of polymerized materials, were examined by confocal laser microscopy. For this purpose, the specimens were treated with fluorescent dye solution before the test. The results showed that hydrolytic degradation (pH 7) mainly involved the resin matrix, and the acid erosion (pH 3.5) involved the gel layer too. As regards the filler, materials with different setting mechanism released the glass particles in different times. The loss of the filler particles occurred quicker in acid–base setting cements, and slower in triple-cured material.

Keywords
Glass-ionomer cements; Restorative materials; Confocal laser microscopy; Stereomicrosopy; Porosity; Gel layer
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Structure of dental glass-ionomer cements by confocal fluorescence microscopy and stereomicroscopy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 22, Issue 17, September 2001, Pages 2353–2358
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us