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Open AccessDissertation10.47749/t/unicamp.2001.225620

Estudos "in vitro" e "in situ" do efeito de agentes clareadores contendo peroxido de carbamida sobre a microdureza de tecidos dentais higidos e desmineralizados

Roberta Tarkany Basting-2001-10-17
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TL;DRAbstract

The objective of this in vitro study was to evaluate the enamel microhardness treated with two different 1 O" /o carbamide peroxide bleaching materials at different time intervals. Materiais CU1d Methods. Two bleaching agents were analyzed: Opalescence I Ultradent (OPA) and Rembrandt I Den-Mat Corporation (REM). The control group ( COi\1) consisted o f dental fragments rnaintained in artificial saliva. Bleaching agents were accomplished for eight hours per day and stored during the remaining diary time in an individual recipient with artificial saliva. Microhardness testing was performed before the initial exposure to the treatrnents and afier 1, 7, 14, 21, 28, 3 5 and 42 days in the enamel tissue. Results: The Analysis of Variance, followed bv the Bartlet and Tukey tests, showed significant differences for treatments (p < 0.00001) from the seventh to the forty-second day. From the seventh to the fourteenth day, OPA presented an increase of enamel microhardness over time while REM pres

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The objective of this in vitro study was to evaluate the enamel microhardness treated with two different 1 O" /o carbamide peroxide bleaching materials at different time intervals. Materiais CU1d Methods. Two bleaching agents were analyzed: Opalescence I Ultradent (OPA) and Rembrandt I Den-Mat Corporation (REM). The control group ( COi\1) consisted o f dental fragments rnaintained in artificial saliva. Bleaching agents were accomplished for eight hours per day and stored during the remaining diary time in an individual recipient with artificial saliva. Microhardness testing was performed before the initial exposure to the treatrnents and afier 1, 7, 14, 21, 28, 3 5 and 42 days in the enamel tissue. Results: The Analysis of Variance, followed bv the Bartlet and Tukey tests, showed significant differences for treatments (p < 0.00001) from the seventh to the forty-second day. From the seventh to the fourteenth day, OPA presented an increase of enamel microhardness over time while REM pres

Keywords

Enamel paintIndentation hardnessStatistical analysisCarbamide peroxideNegative controlSalivaDentistryAnalysis of variance

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