Is prolonged bleaching more harmful to dental enamel than daily dietary and hygienic oral habits?

Ribeiro, Mara Eliane Soares; Lopes, Raquel Marianna; Aranha, Ana Cecília Corrêa; Medeiros, Igor Studart; Lima, Rafael Rodrigues; Júnior, Mário Honorato Silva e Souza; Loretto, Sandro Cordeiro

doi:10.1590/1807-3107bor-2021.vol35.0113

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…In addition, a greater concern for self-care with regard to oral health is observed [ 4 , 14 ], mainly represented by the action of teeth brushing. These common daily habits (consuming acidic beverages and brushing teeth) have been proven to exacerbate the aforementioned adverse effects [ 13 , 15 ]. Ribeiro et al evaluated the association of daily habits with excessive bleaching with a low-concentration gel and showed that the erosive action was more harmful to dental enamel [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel

et al. 2022

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This study aimed to evaluate the effects of 22% carbamide peroxide combined with an erosive challenge and simulated brushing on enamel. Bovine incisor teeth were divided into G1, tooth bleaching; G2, tooth bleaching + erosive challenge; and G3, tooth bleaching + erosive challenge + simulated brushing, and evaluated at T0, before any intervention; T1, 14 days after the proposed treatments; and T2, 28 days after the proposed treatments. Tooth bleaching was performed daily for 1 h for 28 days. The microhardness, surface roughness, mass variation, and ultrastructure were analyzed at T0, T1, and T2. Two-way analysis of variance for repeated measures was performed and Tukey’s post hoc test (α = 5%) was used. The surface roughness increased in groups G2 and G3 as a function of time, whereas microhardness and mass measurements demonstrated a significant reduction for groups associated with challenges. Ultrastructural evaluation indicated a loss of the aprismatic layer and exposure of the enamel prisms in all groups after 14 days of bleaching, with more pronounced results in G2 and G3 after 28 days. In conclusion, abrasive and erosive challenges potentiated the deleterious effects of tooth whitening on microhardness, ultramorphology, and mass, without affecting the roughness of dental enamel.

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Section: Introductionmentioning

confidence: 99%

Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel

et al. 2022

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Effects of Time-Elapsed Bleaching on the Surface and Mechanical Properties of Dentin Substrate Using Hydrogen Peroxide-Free Nanohydroxyapatite Gel

Khan,

AlKhureif,

Almutairi

et al. 2024

IJN

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Introduction There is a critical need to address concerns surrounding the potential impact of bleaching gels specifically on the tooth substrate. Therefore, this laboratory investigation aimed to assess the impact of a hydrogen peroxide (HP)-free bleaching (HiSmile TM ) in comparison to an HP-based bleaching (Opalescence Regular TM ) on the surface and mechanical characteristics of tooth substrate. Methods Sixty sound human premolar teeth were sectioned to produce dentin fragments and divided into two primary groups based on the bleaching agent used. Each group was subdivided into three subgroups (n = 10) per distinct bleaching regimens: (T 1 ) fragments underwent a 7-day immersion in distilled water at 37°C without any bleaching treatment, (T 2 ) fragments underwent a 7-day immersion in distilled water at 37°C, with the application of bleaching gel occurring on the seventh day for 10 minutes, and (T 3 ) fragments underwent a bleaching regimen for seven consecutive days, each session lasting for 10 minutes. The initial and final evaluations of surface roughness, nano-hardness, and elastic modulus were performed. Following the bleaching regimens of T 3 , a composite stub was fabricated on the dentin fragments for the shear bond strength (SBS) test. Statistical testing was accomplished using the analysis of variance (P < 0.05). Results HP-based bleaching gel showed significant differences between measurement intervals in surface roughness, elastic modulus, and SBS parameters (P < 0.05). In contrast, HP-free bleaching gel showed insignificant differences within the group (P > 0.05). The SBS between dentin-composite was significantly affected with the use of HP-based bleaching gel, while HP-free bleaching gel showed insignificant difference between measurement intervals. The qualitative validation of the treatment’s impact was further demonstrated using the scanning electron microscopy. Conclusion The findings suggest that the bonding stability of composite restorations to dentin may be compromised after bleaching with an HP-based gel, whereas immediate bonding procedures can be safely conducted following the application of an HP-free bleaching gel.

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High Concentration Whitening Gel Without Remineralizers: The Importance of Polishing and Fluoridation After Tooth Bleaching

MES,

Baia,

Júnior

et al. 2024

TODENTJ

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Background This study aimed to evaluate the effects of dental polishing and topical application of neutral fluoride after bleaching with 35% hydrogen peroxide (HP35%) without remineralizing bioactive components in its composition on the surface roughness (SR) of tooth enamel. Material and Methods Fifty healthy bovine incisors were divided into five groups (n=10 each): G1, without treatment (only stored in artificial saliva); G2, dental bleaching with HP35%; G3, dental bleaching with HP35% + tooth polishing with diamond paste; G4, tooth whitening with HP35% + topical application of fluoride; G5, dental bleaching with HP35% + tooth polishing with diamond paste + topical application of fluoride. SR readings were taken at times T0 (before treatment) and T1 (after treatment). Data were analyzed using analysis of variance for samples related to Tukey's post hoc test. Results The lowest mean roughness was observed in G3 at T1 (0.123 Ra) and the highest mean in G1 at T0 (0.198 Ra). However, the values of all groups at T1 were not statistically different (p˃0.05) from the T0 values. Conclusion Coronal polishing and topical application of neutral sodium fluoride did not interfere with the roughness of the enamel bleached with a gel without remineralizing agents in its composition.

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Is prolonged bleaching more harmful to dental enamel than daily dietary and hygienic oral habits?

Cited by 3 publications

References 34 publications

Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel

Excessive Dental Bleaching with 22% Carbamide Peroxide Combined with Erosive and Abrasive Challenges: New Insights into the Morphology and Surface Properties of Enamel

Effects of Time-Elapsed Bleaching on the Surface and Mechanical Properties of Dentin Substrate Using Hydrogen Peroxide-Free Nanohydroxyapatite Gel

High Concentration Whitening Gel Without Remineralizers: The Importance of Polishing and Fluoridation After Tooth Bleaching

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