ABSTRACT
O clareamento caseiro, com peróxido de carbamida a 10%, aplicado por meio de moldeiras personalizadas, ainda é o protocolo de tratamento mais utilizado, quando se quer branquear os dentes. No entanto, está disponível técnica mais recente, que consiste na utilização de fitas adesivas pré-contornadas, impregnadas com agente clareador, que contêm diferentes concentrações de peróxido de hidrogênio. Aplicadas uma ou duas vezes ao dia, as fitas são facilmente adaptadas aos dentes anteriores. O objetivo deste artigo é apresentar relato de clareamento dental caseiro com utilização de fitas adesivas impregnadas com peróxido de hidrogênio a 6%, abordando suas principais características, indicações e limitações.
Vital bleaching using 10% Carbamide Peroxide and custom-made trays is still the most used technique for dental bleaching. However, there is a novel technique for bleaching vital teeth using whitening strips containing different concentrations of hydrogen peroxide. The strips are easily adapted in a QD or BID regimen over the anterior teeth. The aim of this paper is to present a clinical case where 6% hydrogen peroxide strips were used, and to discuss the main characteristics, indications and limitations.
Subject(s)
Humans , Male , Young Adult , Tooth Bleaching/methods , Hydrogen Peroxide , Reagent Strips , Tooth BleachingABSTRACT
This study investigated the influence of a papain-based gel(Papacárie) for chemo-mechanical caries removal on bond strength todentin. Human molars were assigned to the following groups: Group 1:sound teeth were flattened to expose dentin; Group 2: after flattening ofsurfaces, the papain-based gel was applied on the sound dentin; Group3: overlying enamel from carious teeth was removed and mechanical excavationof dentin was conducted; Group 4: chemo-mechanical excavationof carious dentin was conducted using the papain-based gel. ThePrime&Bond NT or Clearfil SE Bond adhesive systems were used forrestorative procedures. A microtensile bond strength test was performed,and the modes of failure were determined under SEM. The data weresubmitted to two-way ANOVA and Tukeys test (p ≤ 0.05). No significantdifferences were observed between the sound dentin groups. Forboth excavation methods, Clearfil presented a significantly higher bondstrength than Prime&Bond NT. Also, for Clearfil, the mechanically excavatedsamples disclosed a significantly higher bond strength than thechemo-mechanically ones. For Prime&Bond NT, no significant differenceswere detected between the excavation methods. Predominance ofmixed failures for the sound substrate and of adhesive failures for thecarious dentin one was detected. The bond strength to carious dentinof the self-etching system was negatively affected by chemo-mechanicalexcavation using the papain-based gel.