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Eur J Oral Sci

Title:		Measurements of volatile compound contents in resins using a moisture analyzer
Author(s):		Hashimoto M; Nagano F; Endo K; Ohno H;
Address:		"Division of Biomaterials and Bioengineering, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Japan. masanori-h@mue.biglobe.ne.jp"
Journal Title:		Eur J Oral Sci
Year:		2010
Volume:		118
Issue:		1
Page Number:		94 - 99
DOI:		10.1111/j.1600-0722.2009.00699.x
ISSN/ISBN:		1600-0722 (Electronic) 0909-8836 (Linking)
Abstract:		"The contents of volatile adhesive compounds, such as water, solvents, and residual unpolymerized monomers, affect the integrity and durability of adhesive bonding. However, there is no method available that can be used to rapidly assess the residual solvent or water contents of adhesive resins. This study examined the effectiveness of a digital moisture analyzer to measure the volatile compound contents of resins. Five self-etching adhesives and seven experimental light-cured resins prepared with different contents (0, 10, and 20% by weight) of water or solvents (acetone and ethanol) were examined in this study. The resins were prepared using different methods (with and without air blast or light-curing) to simulate the clinical conditions of adhesive application. Resin weight changes (% of weight loss) were determined as the residual volatile compound contents, using the moisture analyzer. After the measurements, the resin films were examined using a scanning electron microscope. The weight changes of the resins were found to depend on the amount of water or solvents evaporating from the resin. Water and solvents were evaporated by air blast or light-curing, but some of the water and solvents remained in the cured resin. The moisture analyzer is easy to operate and is a useful instrument for using to measure the residual volatile compound contents of adhesive resin"
Keywords:		"Acetone/analysis Air Analysis of Variance Ethanol/analysis Light-Curing of Dental Adhesives Materials Testing Microscopy, Electron, Scanning Resin Cements/*chemistry Solvents/analysis Vapor Pressure Volatile Organic Compounds/*analysis Water/analysis;"
Notes:		"MedlineHashimoto, Masanori Nagano, Futami Endo, Kazuhiko Ohno, Hiroki eng Research Support, Non-U.S. Gov't England 2010/02/17 Eur J Oral Sci. 2010 Feb; 118(1):94-9. doi: 10.1111/j.1600-0722.2009.00699.x"