𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Bond strength and hardness of light-activated composite resins

✍ Scribed by Schulein, Thomas M. ;Boyer, Daniel B. ;Chalkley, Yvonne

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
398 KB
Volume
18
Category
Article
ISSN
0021-9304

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✦ Synopsis

The bond strength of visible light-activated composites to etched enamel was measured a s a function of exposure time, Studies have shown that the bottom surface may not be as hard as the top after customary cure times. Therefore this study also measured hardness and related it to enamel bonding. Plexiglas molds were used to simulate extracoronal appli-cations where light is not attenuated by enamel. Bond strength and hardness of the bottom surfaces reached maximum values after the same exposure times with two of the three composites. More exposure time than normally recommended by manufacturers was needed to obtain maximum bond strength to enamel.

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