Journal
JOURNAL OF BIOMATERIALS APPLICATIONS
Volume 23, Issue 1, Pages 85-96Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0885328207086316
Keywords
ceramic; dental materials; hardness; resin cement; polymerization depth
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This study investigates the in-depth polymerization of dual-cured resin cement (Enforce; Dentsply, shades A2, B1, and opaque). Cylindrical specimens are obtained by photo-activation through ceramic. Control samples are light-cured without using ceramic. Samples are tested after 15 min or 24 h. Knoop hardness readings are made at 100, 300, 500, and 700 mu m depth. Hardness is generally dependent on the mode of activation and post-cure time. Shades A2 and B1 show higher hardness values than opaque resin. Hardness at 100 mu m is higher than at 700 mu m. A linear relationship between hardness and depth is observed.
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