Efeito do uso de anti-inflamatório pré emptivo na redução da sensibilidade com uso de dois agentes clareadores: estudo clínico randomizado controlado

Abstract

Tooth bleaching is one of the most aimed procedures nowadays. Near 70% of people which receive the bleaching shows tooth sensitivity as adverse effect, and, in many cases, giving up of the treatment. This study evaluated the Etodolac anti-inflammatory non-esteroidal influence on reducing dental office bleaching trans and post sensitivity, using: Whiteness HP Maxx and Whiteness HP Blue Calcium. Twenty eighty patients were selected, 14 using Whiteness HP Maxx and the other half with Whiteness HP Blue Calcium. The tooth sensitivity was measured throw the verbal scale. One hour before the tooth bleaching, the patient received Etodolac (intervention) or placebo (control). The sensitivity was measured before the bleaching, at 20´, 40´of the procedure, immediately after gel removing, 24 and 48 hours after the bleaching. One week later, the second bleaching session was done exactly as the first one. The color was measured using Bleach Guide scale (Vita) and Easy Shade (Vita) spectofotometer 7 and 14 days after the first session. Color data using Bleach Guide was submitted to Friedman and Mann-Whitney non-parametrics tests. In addition, Mann Whitney was applied for ΔE data. Sensitivity scores were submitted to Mann-Whitney and Wilcoxon non-parametrics tests. All tests considered a 5% significance level. There was no statistical significance difference on color when comparing both bleaching gels, at all times evaluated. The sensitivity evaluated using the verbal scale, comparing the different bleaching gels, showed statistical significant difference, with higher sensitivity for HP Maxx. When comparing the Placebo and Etodolac effect, there was no differences about the sensitivity. We conclude that using bleaching agent without calcium incites a highest sensitivity. The use of Etodolac was not effective on reducing trans and post sensitivity.