The Journal of the American Dental Association
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J Am Dent Assoc, Vol 118, No 2, 199-202.
© 1989 American Dental Association
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Journal of the American Dental Association, Vol 118, Issue 2, 199-202
Copyright © 1989 by American Dental Association

Journal Article

Marginal ridge strength of restored teeth with modified Class II cavity preparations



D Covey, TM Schulein, and FJ Kohout
Department of Restorative Dentistry, Virginia Commonwealth University, Richmond 23298-0566.

This study compared marginal ridge fracture resistance in two groups of teeth restored with modified Class II cavity preparations, with control groups. The results indicated that the composite resin and dental amalgam restored teeth fractured at compressive loads that were not statistically different from those of the control (unprepared, intact) teeth. The marginal ridges of the unrestored, prepared teeth were significantly weaker.




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