The Journal of the American Dental Association
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J Am Dent Assoc, Vol 116, No 7, 871-874.
© 1988 American Dental Association
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Journal of the American Dental Association, Vol 116, Issue 7, 871-874
Copyright © 1988 by American Dental Association

Journal Article

Effect of coefficient of thermal expansion on microleakage



RH Bullard, KF Leinfelder, and CM Russell
Department of Biomaterials, University of Alabama School of Dentistry, Birmingham 35294.

This study examines the relationship between thermal coefficient of expansion and microleakage. Six restorative materials with varying coefficients of thermal expansion were thermocycled in basic fuschin dye and compared for relative microleakage. The use of dental restorative materials with low coefficients of thermal expansion such as glass ionomer can control microleakage.




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