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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

October 1991
Volume 22 , Issue 10

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Effect of carbamide peroxide on composite resins


Pages: 817-821

The purpose of this study was to determine the effects of four 10% carbamide peroxide gels on surface roughness (profilometer), lightness (colorimeter) and hardness (Rockwell) of three composite resin materials. Twenty samples of each composite resin were prepared and treated every 2 hours with fresh carbamide peroxide gel for 14 days. Only two groups had a statistically significant increase in surface roughness: Prisma APH with White & Brite and Silux Plus with Gly-Oxide. Three groups had a statis tically significant increase in lightness: Prisma APH with Gly-Oxide, Bis-Fil with Proxigel, and Bis-Fil with Gly-Oxide. Four groups had a statistically significant increase in hardness: Bis-Fil with Lighten, Bis-Fil with White & Brite, Prisma APH with White & Brite, and Prisma APH with Gly-Oxide. All these effects were minimal and probably not clinically significant.

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