Color alteration in teeth subjected to different bleaching techniques

Briso, André Luiz Fraga; Fonseca, Mariana Saraiva Marthes; Almeida, Letícia Cunha Amaral Gonzaga de; Mauro, Sílvio José; Santos, Paulo Henrique dos

doi:10.1134/s1054660x10210036

Cited by 19 publications

(6 citation statements)

References 22 publications

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“…When the coordinates (Δa*, Δb* e ΔL*) are individually analyzed, it can be observed that the control group values remains unaltered, demonstrating the color maintenance during the experiment. In addition, the specimens submitted to dental bleaching procedure presented negative Δb values, showing that regardless the used product, the specimens became less yellowish (17).…”

Section: Discussionmentioning

confidence: 96%

Penetration Capacity, Color Alteration and Biological Response of Two In-office Bleaching Protocols

et al. 2016

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Hydrogen peroxide (H2O2) penetrates into the dental hard tissues causing color alteration but also alterations in pulpal tissues. Hard-tissue penetration, color alteration and the pulp response alterations were evaluated for two in-office bleaching protocols with H2O2. For trans-enamel/dentin penetration and color alteration, discs of bovine teeth were attached to an artificial pulp chamber and bleached according to the groups: BLU (20% H2O2 - 1x50 min, Whiteness HP Blue); MAX (35% H2O2 - 3x15 min, Whiteness HP Maxx); Control (1x50 min, placebo). Trans-enamel/dentin penetration was quantified based on the reaction of H2O2 with leucocrystal violet and the color analyzed by CIELab System. Twenty Wistar rats were divided into two groups (BLU and MAX) and their maxillary right molars were treated according to the same protocols of the in vitro study; the maxillary left molars were used as controls. After 2 days, the animals were killed and their maxillae were examined by light microscopy. The inflammation of pulp tissue was scored according to the inflammatory infiltrate (1, absent; 2, mild; 3, moderate; 4, severe/necrosis). Data were analyzed by statistical tests (α=0.05). MAX showed higher trans-enamel/dentinal penetration of H2O2 (p<0.05). The color alteration was similar for both groups (p>0.05), and different when compared to Control group (p<0.05). MAX showed severe inflammation in the upper thirds of the coronal pulp, and BLU showed moderate inflammation (p<0.05). In-office bleaching protocols using lower concentrations of hydrogen peroxide should be preferred due to their reduced trans-enamel/dentinal penetration since they cause less pulp damage and provide same bleaching efficiency.

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Section: Discussionmentioning

confidence: 96%

Penetration Capacity, Color Alteration and Biological Response of Two In-office Bleaching Protocols

et al. 2016

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“…1 Some authors have questioned whether light sources actually catalyze the oxidation reaction and contribute to produce better results than home bleaching. 2 Despite all the developments in bleaching materials, there is still concern over the effects on the enamel surface after the bleaching treatment. The effects usually noted when home bleaching agents are used in low concentrations include shallow depressions, increased porosity, and mild erosion, whereas higher concentrations of whitening agents may cause morphological alterations of the enamel surface.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of pH Levels and Surface Roughness After Bleaching and Abrasion Tests of Eight Commercial Products

Trentino

Soares

Duarte

et al. 2015

Photomedicine and Laser Surgery

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“…Besides ensuring efficacy, all treatments need to take into account the safety aspect. In previous studies, the composition of whitening agents was changed, including reducing the concentration of peroxide, increasing antisensitive substances, and so on, hoping to reduce the side effect of whitening, which is tooth sensitivity, without reducing the curative effect [24][25][26][27][28]. Tooth whitening is still considered to be a treatment with minimal damage to the structure of the teeth [29][30][31][32].…”

Section: Discussionmentioning

confidence: 99%

Enamel Microabrasion Combined with in-Office Bleaching in Treating with Moderate to Severe Dental Fluorosis: A Randomized Clinical Trial

Lu¹,

Wang

Gao

et al. 2021

BJSTR

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Statement of Problem:The stained dental fluorosis affects the beauty and selfconfidence of the patients. How to treat these patients safely and effectively is being explored by the clinicians. Enamel microabrasion has been widely used in treating dental fluorosis, and this method can be combined with at-home bleaching to improve the efficacy. However, this combined treatment was generally applied to patients with mild-to-moderate dental fluorosis. Whether this treatment can be used in severe dental fluorosis is unknown. Additionally, at-home bleaching is patient-applied and timeconsuming. Therefore, microabrasion combined with professional in-office bleaching may be a better choice. However, whether the enamel microabrasion enhances the risk of dental sensitivity of in-office bleaching remain unclear.Purpose: This parallel, clinical, randomized controlled trial (RCT) aimed to evaluate the efficacy and sensitivity of enamel microabrasion combined with in-office bleaching in treating stained dental fluorosis. Material and Methods:A total of 60 adult patients with dental fluorosis treated at our Hospital were randomly divided into two groups (n = 30 in each group). The patients in group 1 received enamel microabrasion combined with 35% hydrogen peroxide for in-office bleaching. The patients in group 2 only received 35% hydrogen peroxide for bleaching. The area ratio (a) of fluoride staining of six maxillary anterior teeth of the two groups before and after the treatment was compared. The differences in fluorosis area ratio of maxillary anterior teeth (Δa) and visual analog scale (VAS)1 before and after the treatment were further compared. The tooth sensitivity ratio (S) of the patients and VAS2 were also compared. The rank-sum test was used to analyze a, Δa, VAS1 and VAS2. The Fisher exact probability method was used to analyze the sensitivity rate.Results: Both treatments reduced the area ratio of fluoride staining. The decrease in Δa was more in group 1 than in group 2 and the patients were more satisfied with the treatment. However, the patients were more sensitive (VAS2) in group 1. Conclusions:In-office bleaching can improve moderate and severe dental fluorosis. The effect of the combination of enamel microabrasion and bleaching is better. The choice of treatment should take into account the patient's esthetic requirements and the individual differences in the degree of acceptance.Clinical Implications: This study compared the efficacy and tooth sensitivity of enamel microabrasion combined with in-office bleaching and in-office bleaching only in treating stained dental fluorosis.. Our founding may provide a novel choice for treating moderate and severe dental fluorosis

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Color alteration in teeth subjected to different bleaching techniques

Cited by 19 publications

References 22 publications

Penetration Capacity, Color Alteration and Biological Response of Two In-office Bleaching Protocols

Penetration Capacity, Color Alteration and Biological Response of Two In-office Bleaching Protocols

Evaluation of pH Levels and Surface Roughness After Bleaching and Abrasion Tests of Eight Commercial Products

Enamel Microabrasion Combined with in-Office Bleaching in Treating with Moderate to Severe Dental Fluorosis: A Randomized Clinical Trial

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