Evaluation of the effect of tooth polishing on color stability after in-office bleaching treatment

Abstract

Introduction One of the most commonly used corrective methods for staining teeth is tooth bleaching. However, subclinical alterations may occur in the micromorphology of dental tissues during the bleaching procedure, such as increases in porosity and surface roughness. Consequently, dental enamel may become more permeable and susceptible to staining. Objective To evaluate the influence of tooth polishing after in-office bleaching treatment on color stability. Material and method Thirty-three extracted human molars were used. The teeth were cut in the mesiodistal direction to obtain two samples per tooth (total of 66). The samples were randomly divided into six groups (n=11). Before and after the bleaching treatment, the lightness of the samples and change in lightness (∆L) were determined with a digital spectrophotometer (Easy Shade). The samples were bleached with 35% hydrogen peroxide (three sessions weekly). Three groups were submitted to polishing with felt discs and polishing paste after each session. To simulate the oral conditions during the consumption of colored beverages, the samples were submitted to alternating cycles of immersion in staining solutions (coffee, red wine, and Coca Cola). Result Polishing resulted in an increase of mean lightness of 4.49 in the red wine group, 2.73 in the coffee group, and 4.08 in the cola group. The difference was significant in the red wine group (p<0.022), but not in the coffee or cola group. Conclusion Polishing after in-office bleaching using felt discs and polishing paste can reduce the degree of pigment impregnation in patient with red wine rich diet.

Combination of strontium chloride and photobiomodulation in the control of tooth sensitivity post-bleaching: A split-mouth randomized clinical trial

“…Three 15-minute applications of bleaching gel were performed on the buccal surface of incisors, canines and premolars of the upper and lower arches, totaling 45 minutes in each of the bleaching sessions [ 20 , 35 ]. To play down structural changes caused by tooth bleaching [ 36 , 37 ], after each bleaching session, the bleached surfaces were polished with felt discs (Kota, São Paulo, SP, Brazil) and diamond paste (Diamond R, FGM, Joinville, SC, Brazil). The bleaching treatment was performed in three sessions, with intervals of seven days between them.…”

Métodos de clareamento dental para o sucesso clínico: uma análise comparativa de estudos clínicos através de uma revisão integrativa da literatura

“…Esse desejo surge a partir do padrão de beleza imposto pela cultura moderna, no qual os dentes devem ser mais brancos, bem contornados e corretamente alinhados. Partindo disso, alguns estudos apontam que fatores como esses podem interferir nas relações interpessoais e em julgamentos mais positivos que influenciam na autoestima das pessoas (Espíndola-Castro et al, 2020;Câmara et al, 2020).…”

“…Estes agentes clareadores realizam a oxidação de macromoléculas nas manchas de dentina e, em seguida, sua quebra em estruturas menores. Após isso, ocorre a difusão para a superfície, causando o clareamento do dente (Espíndola-Castro et al, 2020).…”