The Effect of a Charcoal-based Powder for Enamel Dental Bleaching

Franco, Marina Christ; Uehara, Jls; Meroni, B M; Zuttion, G S; Cenci, Maximiliano Sérgio

doi:10.2341/19-122-l

Cited by 59 publications

(89 citation statements)

References 19 publications

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“…The remaining fillers were dried at 37 °C in an incubator (FANEM) for 24 h. The filler particles were placed on stubs and sputter‐coated with gold (MED 010 Baltec) before SEM observation. For filler particle morphological characterization, specimens were examined using SEM (voltage 15 kV, beam width 25–30 nm, working distance 10–15 mm) at magnifications of 200× and 2000× 21 . Representative images at different magnifications were obtained for each material and were used for qualitative analysis and particle‐size comparison by software analysis of the recorded images (ImageJ, 1.6.0_24, National Institutes of Health, Bethesda, MD, USA).…”

Section: Methodsmentioning

confidence: 99%

Charcoal‐based dentifrices: Effect on color stability and surface wear of resin composites

Torso

Fraga

Lopes

et al. 2021

J Esthet Restor Dent

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Objective To evaluate the effect of charcoal‐based dentifrices on the color change (CC) and surface wear (SW) of resin composites. Materials and Methods Five dentifrices, including three toothpastes: Colgate total‐12 (C12), Black is the new White (CPX), and Natural (NAT); and two powders: Carvvo (CVV) and Whitemax (WMX), were evaluated. Composite blocks (5x5x2mm‐ Z350 3 M/ESPE, shade A2) were subjected to 417 and 5004 brushing cycles. The CC (n = 7, CIEDE2000; ΔE00) was evaluated using a spectrophotometer. SW (n = 5) was assessed using profilometry. The dentifrice particles were characterized by scanning electron microscopy (SEM). Results In 417 brushing cycles, resin composite exhibited higher color change upon being exposed to NAT, CVV and WMC than to C12 (p ≤ 0.05). In 5004 brushing cycles, resin composite showed higher color change values when exposed to all dentifrices, except C12 (p ≤ 0.05). The powders promoted higher SW on resin composite than C12 in both evaluation times (p ≤ 0.05). In 417 cycles, WMX caused higher SW on composite than C12, CPX, and NAT (p ≤ 0.05). No significant different SW was found between powders and charcoal‐based toothpastes after 5004 brushing cycles (p > 0.05). SEM showed larger particles for powder than for toothpaste dentifrices. Conclusion Within the limitations of this study, both null hypotheses have been rejected. Resin composites exposed to charcoal‐based dentifrices exhibited significantly (p ≤ 0.05) higher color change and surface wear than conventional toothpastes. Clinical Significance Color change and surface wear shown by charcoal dentifrices may compromise the longevity of restorations.

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Section: Methodsmentioning

confidence: 99%

Charcoal‐based dentifrices: Effect on color stability and surface wear of resin composites

Torso

Fraga

Lopes

et al. 2021

J Esthet Restor Dent

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“…In recent days, activated charcoal‐based powders and toothpastes have gained popularity among patients 11,12 . The majority of charcoal‐containing products are claimed to promote color change, being advertised as over‐the‐counter whitening options 13 .…”

Section: Introductionmentioning

confidence: 99%

“…However, literature is not consistent with the whitening effectiveness of charcoal powder as well as the safety of this product to the enamel surface 11,14 . Moreover, the use of activated charcoal raises concerns about the risk of caries due to the predominance of nonfluoridated charcoal‐containing products marketed for patients 12 . Aiming to reverse such disadvantage, some manufacturers indicate toothbrushing with activated charcoal powders before use of toothpastes 15 .…”

Section: Introductionmentioning

confidence: 99%

“…In recent days, activated charcoal-based powders and toothpastes have gained popularity among patients. 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.…”

mentioning

confidence: 99%

“…11,14 Moreover, the use of activated charcoal raises concerns about the risk of caries due to the predominance of nonfluoridated charcoal-containing products marketed for patients. 12 Aiming to reverse such disadvantage, some manufacturers indicate toothbrushing with activated charcoal powders before use of toothpastes. 15 To date, there is no evidence of the effectiveness of charcoal powder used in combination with regular or whitening toothpastes, and studies lack to define the effect of charcoal-based products on surface properties of enamel, especially when this product is combined with toothpastes (regular or whitening).…”

mentioning

confidence: 99%

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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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At-Home Tooth Bleaching: Current Evidence and Clinical Applications

Perdigão,

Araujo

2023

Tooth Whitening

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The Effect of a Charcoal-based Powder for Enamel Dental Bleaching

Abstract: Clinical Relevance Charcoal based-powders are not effective for dental bleaching.

Cited by 59 publications

References 19 publications

Charcoal‐based dentifrices: Effect on color stability and surface wear of resin composites

Charcoal‐based dentifrices: Effect on color stability and surface wear of resin composites

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

At-Home Tooth Bleaching: Current Evidence and Clinical Applications

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