Tooth whitening affects bond strength of adhesive systems in enamel

Neto, Cantídio Francisco de Lima; Silva, Carolina Batista da; Silva, Marcos Aurélio Bomfim da; Vitti, Rafael Pino; Zanta, Carmem Lúcia de Paiva e Silva; Tonholo, Josealdo

doi:10.1590/s1517-707620180004.0561

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Regarding the properties related to enamel adhesion strength, fracture, and abrasion resistance after tooth bleaching, it was found that there are few studies on this reference, which generates insufficient data to reach concrete and reliable conclusions (Klarić et al, 2013;Lima Neto et al, 2018). The action of hydrogen peroxide present in Groups 2 and 3 would be physically altering the dental structure, leaving the enamel more porous and susceptible to pigmentation, to the detriment of an effective whitening action.…”

Section: Discussionmentioning

confidence: 99%

Clinical evaluation of domestic dental whitening strategies

Silva

Melo

Dias

et al. 2021

RSD

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Tooth bleaching has become the first clinical option in reversing chromatic changes. This study evaluated the efficiency of four different approaches for home-based chemically induced tooth whitening. 32 patients were randomly distributed into four groups (n=8), according to the bleaching technique performed: G1: control group – at-home dental bleaching with 10% carbamide peroxide (Whiteness Perfect/FGM) delivered in a customized tray, G2: teeth whitening pen containing hydrogen peroxide (Walgreens), G3: night-time whitening gel (CVS) containing hydrogen peroxide and G4: whitening strips (3D White Oral B) containing 10% hydrogen peroxide. Chromatic changes (ΔE) were collected at baseline and at the middle and end of the treatment, using a digital spectrophotometer (EasyShade – Vita). Tooth sensitivity, gingival irritation, and degree of satisfaction were also recorded. The comparison between the average ΔE means, considering the final and initial values, revealed a statistically significant difference between the results obtained by G1 (ΔE2=11.65) and the other groups (ΔE2 of G2=4.38, G3=4.83 and G4 = 8.32). No significant difference was observed in the occurrence of tooth sensitivity and gingival irritation. The patients from G1 and G4 were more satisfied with the treatment outcome.

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Section: Discussionmentioning

confidence: 99%

Clinical evaluation of domestic dental whitening strategies

Silva

Melo

Dias

et al. 2021

RSD

View full text Add to dashboard Cite

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Antioxidant pre-treatments are able to reduce waiting time for restorative treatment after dental bleaching: a microtensile bond strength exploratory study

et al. 2021

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The aim was to evaluate the effect of different antioxidant agents on the improvement of bond strength to enamel subjected to a whitening procedure. Samples were divided into six groups (n = 10): control; whitening immediately followed by restorative treatment (WHT); whitening and restoration after a 7-day period (WHT_7D); whitening and application of 10% sodium ascorbate (WHT_SA); application of 5% grape seed extract (WHT_GS); and application of 5% green tea (WHT_GT). All groups except for control fwere whitened (Opalescence PF Regular 16%) for 7 days (4 h/day). All samples were restored (Optibond™ FL, Kerr and Filtek™ Z250 composite, 3M ESPE). In antioxidant groups these were applied for 15 min and immediately restored. Specimens were sectioned in microspecimens (1.0 ± 0.2 mm2 area) for microtensile bond strength (μTBS) testing (0.5 mm/min) on a universal testing machine. ANOVA test with Brown-Forsythe correction and Games-Howell post-hoc test was used (significance level of 5%). Antioxidant groups presented significant higher mean μTBS values than group WHT (p < 0.001). The non-whitened control group was not significantly different to antioxidant experimental groups. Group WHT_7D exhibited a significantly higher mean μTBS value when compared to group WHT (p = 0.022). The different antioxidants significantly influenced microtensile bond strength of restored teeth after whitening.

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Natural Dental Antioxidants

Essam

2024

Natural Conservative Dentistry: An Alternative Approach to Solve Restorative Problems

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Discoloration of teeth is a common concern among patients seeking cosmetic treatment. The color of teeth can be affected by various factors, both internal and external, such as ingestion of chemicals or consumption of foods that can cause staining. Currently, there are numerous products available in the market that claim to remove stains and whiten teeth. These options include professional prophylaxis, bleaching gels applied to vital teeth for home use, or supervised application in a dental office. Bleaching gels typically contain varying concentrations of carbamide or hydrogen peroxide and are applied using different methods, resulting in different activation mechanisms that promote tooth bleaching through oxi-reduction reactions. Unfortunately, bleaching agents have an adverse effect on bonding to enamel. This is because of the free radicals generated by the breakdown of hydrogen peroxidecontaining bleaching agents. The free radicals hinder the resin infiltration in the interprismatic spaces, inhibit resin polymerization , and restrict resin tag creation. These free radicals are eliminated from the body within a span of 24 hours to 3 weeks, and the bond strength to enamel is restored. So bonding should be postponed for 1-3 weeks so that the bond strength is restored, but this waiting period is not always clinically possible. The use of antioxidants could be a possible solution to immediately restore the reduced bond strength. Antioxidants could be either synthetic or natural. Although synthetic antioxidants proved to have the ability to restore bond strength, they have many adverse effects. Natural antioxidants could be a good alternative to synthetic ones with no side effects.

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Tooth whitening affects bond strength of adhesive systems in enamel

Cited by 3 publications

References 19 publications

Clinical evaluation of domestic dental whitening strategies

Clinical evaluation of domestic dental whitening strategies

Antioxidant pre-treatments are able to reduce waiting time for restorative treatment after dental bleaching: a microtensile bond strength exploratory study

Natural Dental Antioxidants

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