Clinical Trial Evaluating Color Change and Tooth Sensitivity Throughout and Following In-office Bleaching

Avaliação de diferentes sistemas de clareamento dental de consultório

“…O peróxido de hidrogênio a 35% apresenta poder clareador mesmo sendo empregado sem a utilização de fontes de luz [19][20] , fato confirmado pela presente pesquisa, na qual não houve emprego da fotoativação do gel clareador. Entretanto, outras pesquisas afirmam que fontes de luz tornam o tratamento clareador mais eficaz e seguro 14,17 .…”

Evaluation of the Efficacy of LED-Laser Treatment and Control of Tooth Sensitivity During In-Office Bleaching Procedures

“…[5][6][7] The present study used a cross-over, split-mouth (upper and lower arches) clinical approach, which differed from other studies that used a maxillary hemi-arch split-mouth design. 3,8,10 The reason for this choice was the format of the delivery system of the tip of the LED-laser, which has a tip with six LED outlets and three infrared laser outlets arranged in one dental arch (superior or inferior), therefore making it impossible to assess in the same dental arch. It is generally believed there is a greater tendency for sensitivity to occur in teeth in the lower arch because of the lower thickness of dentin, and, consequently, faster and more intense penetration by the bleaching gel.…”

“…Consequently, in each period, the change in color of the teeth in relation to their initial color was determined; color guides were organized from the highest value (B1) to the lowest value (C4), as shown in Table 1. 3,7 The measurement area of interest for the registration of color was the middle third of the labial surface of the central incisors. For calibration purposes, six patients who were not included in the sample participated in the training phase.…”

“…Two examiners, who were blinded to the allocation of the session, evaluated the color of teeth at baseline (before the treatment), after cleaning of the teeth, before and after each treatment session, and at 1 and 6 months after the procedure, always in the same room with artificial lighting and the patient in the same position. 3,10 Statistical analysis…”

“…Consequently, there have been major technological breakthroughs, and the emergence and recognition of conservative techniques such as tooth bleaching represent an important option for aesthetic treatment. [1][2][3][4] Several studies have reported some negative effects of tooth bleaching. 2,[5][6][7] However, the most common side effect in teeth with pulp vitality is tooth sensitivity.…”