Charcoal-containing dentifrices

Greenwall, Linda; Greenwall-Cohen, Joseph; Wilson, Nairn

doi:10.1038/s41407-019-0122-6

Cited by 17 publications

(50 citation statements)

References 9 publications

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“…On the other hand, bleaching agents such as H 2 O 2 change the intrinsic color of the dentin and enamel in a deeper and more lasting way. 22 A wide variety of whitening dentifrices are available in the market, and their main action is through mechanical removal of acquired film and extrinsic stains and polishing of the enamel surface. 2 Some of these products with bleaching agents have low concentrations of H 2 O 2 , in an attempt to improve abrasive cleaning, to help remove extrinsic stains.…”

Section: Discussionmentioning

confidence: 99%

“…25 Patients should be directed to use these formulations properly, as there may be potential for increased abrasiveness and damage to enamel. 4,22 Whitening dentifrices can be more effective in altering the color of teeth than the conventional dentifrices. The best whitening performance was obtained in microsphere dentifrices, followed by those with hydrogen peroxide and blue covarine dye (CI74160).…”

Section: Discussionmentioning

confidence: 99%

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Whitening Dentifrices Effect on Enamel with Orthodontic Braces after Simulated Brushing

et al. 2020

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Objective This study aimed to evaluate in vitro the effects of whitening dentifrices on enamel color, the shear bond strength of orthodontic brackets and adhesive remnant index (ARI). Materials and Methods Eighty bovine teeth with brackets were randomly divided into four groups (n = 20): control group (GC)–water, test group 1 (GT1)–Colgate Total 12, test group 2 (GT2)–Curaprox Black Is White, and group test 3 (GT3)–Luminous White. All groups were submitted to brushing, simulating 12 months. The specimens were exposed to spectrophotometer color evaluation and to a shear strength test in a universal test machine using a 300 kN load with a crosshead speed of 0.5 mm/min. The ARI was evaluated with a stereoscopic magnifying glass. Statistical Analysis Nonparametric Kruskal–Wallis and Dunn’s tests were used for the color analysis, and Friedman and Nemenyi tests were used to compare the times in the variable. To compare the shear force between the groups, the data were evaluated by one-way analysis of variance and Tukey’s test, and ARI was analyzed using Fisher’s exact test, always with a significance level of 5%. Results In the color analysis, GT3 presented the greatest progression in whitening effect. GT1 had greater shear strength than GT3 did (p ≤ 0.05). For ARI, the score 1 was predominant in the GC and GT1. The GT2 and GT3 groups had scores of 3. Conclusion The whitening dentifrices promoted significant color change over the 12-month brushing time and may have interfered in the resistance to shear bond strength and ARI.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Whitening Dentifrices Effect on Enamel with Orthodontic Braces after Simulated Brushing

et al. 2020

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“…11,12 The majority of charcoalcontaining products are claimed to promote color change, being advertised as over-the-counter whitening options. 13 Similar to abrasion provoked by toothpastes, activated charcoal is expected to act on extrinsic pigments and not on dentin chromophores. 7 However, literature is not consistent with the whitening effectiveness of charcoal powder as well as the safety of this product to the enamel surface.…”

mentioning

confidence: 99%

Effects of activated charcoal powder combined with toothpastes on enamel color change and surface properties

Palandi

Kury

Picolo

et al. 2020

J Esthet Restor Dent

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Aim: To evaluate the effects of activated charcoal powder (COAL) combined with regular (RT) or whitening (WT) toothpastes on enamel color and surface in comparison to carbamide peroxide (CP). Methods: Dental blocks (n = 10/group) were randomly divided into COAL, COAL/ RT, COAL/WT, CP, CP/RT, CP/WT, RT, WT, and CONT (without treatment). Simulated toothbrushing and whitening treatments were followed by colorimetric (ΔE 00 , L*, a*, b*), surface roughness (Ra), and enamel topography assays. ΔE 00 was submitted to two-way ANOVA and Tukey test. Color coordinates and Ra were tested with three-way repeated measures ANOVA (α = 5%). Results: COAL exhibited greater ΔE 00 than CONT (P = .048), but it did not enhance ΔE 00 promoted by RT or WT (P > .05). COAL alone increased Ra (P < .001) and altered enamel topography. COAL did not increase Ra caused by RT and WT (P > .05). CP exhibited the highest ΔE 00 (P < .05), but it raised Ra and changed enamel topography to a less extent than COAL. Conclusion: Even though charcoal powder did not increase enamel Ra when combined with toothpastes, the topography was negatively impacted by COAL. Also, COAL was unable to enhance the color change of RT and WT, or reach the effectiveness of CP. Clinical Significance: The use of activated charcoal-based product, claimed as a natural whitener, before brushing with toothpastes is not only ineffective to change the color of teeth, but also it might result in alterations on the enamel surface. Whitening with CP, instead, was effective during the same period of treatment, which still represents a more appropriate technique to whiten teeth.

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“…Although there are no investigations to substantiate that charcoal mouthwash may whiten teeth, an in vitro study involving bovine incisors found one brand of charcoal-based toothpaste resulted in some degree of loss of surface pigmentation. 13 However, Greenwall et al 24 suggested that charcoal particles may lead to marginal staining along the cavosurfaces of defective composite restorations. Only one brand of charcoal mouthwash contained hydrogen peroxide as an apparent chemical bleaching method to whiten teeth; none listed carbamide peroxide.…”

Section: Literature Reviewmentioning

confidence: 99%