Efetividade do clareamento caseiro com peróxido de hidrogênio a 10% aplicado na face palatina. Ensaio clínico randomizado.

Abstract

The objective of this work was to test the effectiveness of dental bleaching with the application of the bleaching agent on the palatal face of the dental element by the technique of home bleaching with 10% Hydrogen Peroxide (PH) in the method split mouth. Twenty-five patients were selected, of which the upper and lower dental arches were molded with alginate and the models were cast with Type IV Plaster. After the preparation of the silicone bleaching trays, windows were made on the vestibular surfaces of the anterior teeth of one of the superior hemiarcates, following randomization, so that the gel was applied only to the palatine face of said elements, while the opposite hemiate remained intact and the gel was applied to the vestibular face. The objective (ΔE) and subjective (ΔSGU) color evaluation was performed at the beginning (T0), 7 days after onset (T1), 14 (T2) and 30 (T3) days after the end of bleaching. The perception of dental sensitivity (SD) was recorded by the patients daily in the Visual Analogue Scale (VAS). The results showed a statistical difference in the subjective color scale (PHV ΔSGU = 3.9 ± 1.8 and PHP ΔSGU = 2.2 ± 1.8, p <0.001), whereas there was no difference for ΔE (PHV ΔE = 15.1 ± 10.3 and PHP ΔE = 10.7 ± 5.2). The absolute risk of SD (recorded at least once by patients) was the same for both groups. SD intensity was the same at both weeks of bleaching in both groups. Home bleaching can be performed by the palatal face, within 14 days, without differences in sensitivity during treatmen