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Whitening efficacy of popular natural products on dental enamel
Maciel, Carla Roberta de Oliveira; Amorim, Ayodele Alves; Oliveira, Rebeca Franco de Lima; Vivanco, Rocio Geng; Pires-de-Souza, Fernanda de Carvalho Panzeri.
  • Maciel, Carla Roberta de Oliveira; University of São Paulo. Ribeirão Preto School of Dentistry. Department of Dental Materials and Prosthodontics. Ribeirão Preto. BR
  • Amorim, Ayodele Alves; University of São Paulo. Ribeirão Preto School of Dentistry. Department of Dental Materials and Prosthodontics. Ribeirão Preto. BR
  • Oliveira, Rebeca Franco de Lima; University of São Paulo. Ribeirão Preto School of Dentistry. Department of Dental Materials and Prosthodontics. Ribeirão Preto. BR
  • Vivanco, Rocio Geng; University of São Paulo. Ribeirão Preto School of Dentistry. Department of Dental Materials and Prosthodontics. Ribeirão Preto. BR
  • Pires-de-Souza, Fernanda de Carvalho Panzeri; University of São Paulo. Ribeirão Preto School of Dentistry. Department of Dental Materials and Prosthodontics. Ribeirão Preto. BR
Braz. dent. j ; 33(3): 55-66, July-Sept. 2022. tab, graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1384030
ABSTRACT
Abstract The objective of this study was to evaluate the effect of natural bleaching products on the color, whiteness, and superficial properties of dental enamel. Seventy fragments of bovine teeth were obtained (6mm x 6mm x 2mm). Initial surface roughness (Surfcorder SE1700, Kosakalab), microhardness (HMV-2, Shimadzu), color (EasyShade, VITA), and surface gloss (Micro-Gloss 45º BYK, Gardner) readings were done. Samples were separated into five groups (n=14) according to the treatments used CT-conventional toothpaste (negative control); CH-charcoal; TU-turmeric; BP-banana peel, and CP16%-16% carbamide peroxide gel (positive control, 4 h/day for 14 days), and then brushed for 560 cycles (T1) and 1200 cycles (T2), equivalent to 14 and 30 days of brushing. New measurements were performed after T1 and T2. The whiteness index for dentistry change (∆WID) and Weight loss (Wl) were calculated. CP16% demonstrated the highest (p<.05) color change (ΔE00) and ∆WID (2-way ANOVA, Bonferroni, p<.05). Surface gloss alterations were lower for TU, CP16%, and BP. CT and CH increased surface roughness (p<.05). CP16% decreased enamel microhardness. CH presented medium abrasiveness, and CT and TU, low abrasiveness. The popular bleaching products were not efficient for tooth whitening. Furthermore, brushing with charcoal increased the enamel surface roughness, and CP16% decreased enamel microhardness over time
RESUMO
Resumo O objetivo deste estudo foi avaliar o efeito de produtos clareadores naturais na cor, efeito clareador e propriedades superficiais do esmalte dentário. Setenta fragmentos de dente bovino foram obtidos (6mm x 6mm x 2mm). Foram realizadas leituras iniciais de rugosidade de superfície (Surfcorder SE1700, Kosakalab), microdureza (HMV-2, Shimadzu), cor (EasyShade, VITA) e brilho (Micro-Gloss 45º BYK, Gardner). As amostras foram separadas em cinco grupos (n=14), de acordo com os tratamentos utilizados DC - dentifrício convencional (controle negativo); CA - carvão ativado; CM - cúrcuma; CB - casca de banana e PC16% - gel de peróxido de carbamida a 16% (controle positivo, 4h/dia por 14 dias), foram então escovadas por 560 ciclos (T1) e 1200 ciclos (T2), equivalente a 14 e 30 dias de escovação. Novas leituras foram realizadas após T1 e T2. A alteração do whiteness index for dentistry (∆WID) e perda de massa (Pm) foram calculadas. PC16% demonstrou a maior (p<0,05) alteração de cor (ΔE00) e ∆WID (2-way ANOVA, Bonferroni, p<0,05). A alteração de brilho foi menor para CM, PC16% e CB. DC e CA aumentaram a rugosidade de superfície (p<0,05). PC16% diminuiu a microdureza do esmalte. CA apresentou abrasividade média, e DC e CM, baixa abrasividade. Os produtos clareadores populares não foram eficientes para clareamento dental. Ademais, a escovação com carvão ativado aumentou a rugosidade de superfície do esmalte dentário, e com maior tempo PC16% diminuiu a microdureza do esmalte.


Full text: Available Index: LILACS (Americas) Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2022 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR

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Full text: Available Index: LILACS (Americas) Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2022 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR