In vitro and clinical evaluation of optical tooth whitening toothpastes

Tao, Danying; Sun, Jianing N.; Wang, Xiaojie; Zhang, Qiong; Naeeni, Mojgan; Philpotts, Carole J.; Joiner, Andrew

doi:10.1016/j.jdent.2017.08.014

Cited by 29 publications

(45 citation statements)

References 16 publications

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“…Danying Tao et al, in 2017, concluded that toothpastes containing blue covarine or a combination of blue covarine and FD&C blue No.1 significantly increase the whiteness of teeth immediately after tooth brushing both in vitro and in the clinical setting. 27 Our study revealed clinically perceivable color change after 90 days, but no changes were noticed at 1, 7, or 30 days.…”

Section: Discussionmentioning

confidence: 41%

Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

et al. 2020

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Objectives This study aimed to assess the effect of an optical whitening toothpaste on color stability of microhybrid, nanofilled, and microfilled composite resins and resin-modified glass ionomer (RMGI) cement in comparison of two other toothpastes. Materials and Methods In this experimental study, disc-shaped composite samples were fabricated. The samples were then polished using silicon carbide papers. Twenty-seven samples of each material were fabricated and subjected to colorimetry using a spectrophotometer. Each group of material was then divided into three subgroups for the application of conventional whitening and whitening containing blue covarine toothpastes. One operator brushed the samples with an electric soft toothbrush with circular motion twice a day, each time for 30 seconds. Colorimetry was performed at 0, 1, 7, 30, and 90 days. Statistical Analysis Two-way analysis of variance (ANOVA), one-way ANOVA, and Tukey’s honestly significant difference (HSD) test were used for statistical analysis. Results The interaction effect of type of restorative material and time on ∆E was not significant at baseline or 1 day (p > 0.05). The effect of type of toothpaste on ∆E was not significant at baseline or 1 day (p = 0.78) but the effect of type of material was significant (p < 0.05). The toothpastes had significantly different effects on ∆E of Z250 at all time points (p < 0.05) except for ∆E0–30 (p = 0.106). The toothpastes had significantly different effects on ∆E of Z350 and Gradia at all time points (p < 0.05). The same was true for RMGI except for ∆E0–7 (p = 0.43) and ∆E0–90 (p = 0.52). The majority of color changes caused by toothpastes were not clinically perceivable (∆E < 3.3), except for ∆E0–90 by the whitening toothpaste (∆E = 9), ∆E0–90 by the conventional toothpaste for Z350 (∆E = 3.9), and ∆E0–1 by the whitening toothpaste for RMGI (∆E = 3.7). Conclusion The color change of all composite samples was not clinically perceivable (<3.3) at all time points, which shows that the tested toothpastes do not cause a significant change in color of composite materials.

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Section: Discussionmentioning

confidence: 41%

Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

et al. 2020

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“…The literature provides conflicting reports concerning the effectiveness of pigments of optical effect in tooth whitening. Collins, et al 9 (2008), Joiner, et al 10 (2008), Tao, et al 30 (2017), Tao, et al 31 (2017) and Bergesch, et al 32 (2017) showed immediate and progressive efficacy; however, studies by Torres, et al 12 (2013), Horn, et al 15 (2014) and by the present research group reported no whitening effect of these compounds. 13 , 14 , 16 …”

Section: Discussionmentioning

confidence: 52%

Whitening toothpaste containing activated charcoal, blue covarine, hydrogen peroxide or microbeads: which one is the most effective?

et al. 2019

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The efficacy of whitening toothpastes is questionable and controversial. Clinicians, patients and researchers have expressed concern with whitening toothpastes due to the risk of wearing the dental structure and the potential for disappointment if the advertised cosmetic results are not achieved. Objective: This study compared the whitening performance of toothpastes with different whitening technologies after initial and continued use. Material and Methods: Ninety bovine incisors were stained using a concentrated solution of black tea. They were randomly distributed into 6 groups, according to the toothpaste whitening technology: activated charcoal (B&W), blue covarine (WAD), hydrogen peroxide (LWA), microbeads (Oral B 3D White Perfection – 3DW) and optimized abrasives (XW4D). They were compared to a traditional toothpaste without a whitening agent (TA – control). Specimens underwent a brushing machine with controlled pressure, time and temperature. A calibrated examiner measured the color using a VITA-Classical scale before the first brushing cycle (T0), after the first brushing cycle (TI), and after a brushing cycle that simulates continuous use (TCU). Whitening performance was evaluated by the difference of shades (ΔSGU) between T0–TI and T0–TCU timepoints, using the Kruskal-Wallis and Dunn's non-parametric test. The Wilcoxon test was used to evaluate the cumulative effect (α=0.05). Results: Statistically significant differences were observed between toothpastes in both TI and TCU (p<0.05). The time of use also had a significant effect (p<0.05). Conclusion: Only WAD and 3DW showed whitening performance after the first use (TI). The greatest whitening performance after continuous use was obtained by WAD, followed by LWA and 3DW. The use of conventional toothpaste (TA) promotes no tooth whitening. Clinical relevance: Microbead abrasives (3DW) and blue covarine (WAD) were the active technology tested that presented the best global tooth whitening performance.

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“…Rev Odontol UNESP. 2018 Nov-Dec; 47 (6): [388][389][390][391][392][393][394] Avaliação in vitro do efeito de dentifrícios...…”

Section: /394unclassified

“…Valores positivos de a* indicam tons avermelhados e os negativos indicam tons verdes; valores positivos de b* indicam tons amarelados e os negativos indicam tons azuis, já valores próximos ao zero indicam tons mais neutros, como branco e cinza. Assim, quanto maior o valor de L* e menor os valores de a* e b*, mais claro e branco será o dente 5,6 . O CIELAB é considerado o padrão clássico para comparar quantitativamente a diferença de cor (ΔE).…”

Section: Introductionunclassified

“…Um estudo in vitro realizado para verificar a eficácia de dentifrícios contendo abrasivos e agentes químicos de clareamento, na redução da descoloração extrínseca do esmalte dentário, demonstrou que os dentifrícios clareadores não superaram o creme dental de uso convencional na remoção de manchas extrínsecas 11 . Contudo, pesquisa realizada para avaliar os efeitos do branqueamento obtido imediatamente após a escovação com dentifrícios à base de sílica contendo blue covarine, in vitro e in vivo, demonstrou uma redução estatisticamente significante na cor do dente e melhora na sua brancura, após a escovação 6,9,12 .…”

Section: Introductionunclassified

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Avaliação in vitro do efeito de dentifrícios branqueadores contendo blue covarine sobre o esmalte dentário bovino

Odilon

Lima

Ribeiro

et al. 2018

Rev. odontol. UNESP

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Resumo Introdução O blue covarine é um agente branqueador que promove mudanças ópticas na superfície dos dentes, associado aos abrasivos dos dentifrícios, colaborando para o branqueamento dentário. Objetivo Determinar as alterações de cor, rugosidade e massa do esmalte bovino, após escovação simulada com dentifrícios branqueadores contendo blue covarine nos tempos 6, 12 e 24 meses. Material e método 80 corpos de prova (CP) foram divididos em 8 grupos (n = 10): grupo controle (GC-água) e 7 grupos teste (GT1-Colgate Total 12, GT2-Oral-B 3D White Perfection, GT3-Colgate Luminous Instant White, GT4-Close Up White Diamond Attraction, GT5-Close Up White-Glacier Fresh, GT6-Sorriso Xtreme White, GT7-Colgate Luminous White Advanced). Os CP foram escurecidos com café e submetidos à escovação simulada por 6, 12 e 24 meses. As avaliações de cor, rugosidade e massa foram realizadas após cada período de escovação. Resultado Nenhum dentifrício teste promoveu alterações significativas na rugosidade e massa dos CP, contudo, quando comparados ao GC todos promoveram branqueamento significativo. A comparação dos grupos teste não demonstrou diferença significativa na variação de cor entre GT1, GT2, GT3, GT5, GT6 e GT7 nos tempos estudados. O GT4 apresentou comportamento variável de acordo com o tempo, não diferindo estatisticamente de GT3 aos 6, 12 e 24 meses, de GT6 aos 6 e 12 meses e de GT7 aos 12 meses. Conclusão O efeito branqueador dos dentifrícios contendo blue covarine , após 2 anos de escovação, parece estar relacionado principalmente com a sua associação aos agentes branqueadores mecânicos, que promoveram o polimento das superfícies dentárias.

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In vitro and clinical evaluation of optical tooth whitening toothpastes

Cited by 29 publications

References 16 publications

Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

Whitening toothpaste containing activated charcoal, blue covarine, hydrogen peroxide or microbeads: which one is the most effective?

Avaliação in vitro do efeito de dentifrícios branqueadores contendo blue covarine sobre o esmalte dentário bovino

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