Assessing the use of 35 percent sodium ascorbate for removal of residual hydrogen peroxide after in-office tooth bleaching

Freire, Andrea; Durski, Marcelo T.; Ingberman, Max; Nakao, Lia S.; Souza, E. M.; Vieira, Sérgio

doi:10.14219/jada.archive.2011.0273

Cited by 44 publications

(93 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The rebound effect tends to slight reduce the effect reached by tooth bleaching and is mainly due to physiological response to pulpal damage. On the other hand, this effect is not expected using ex-vivo teeth and the color changes following the storage time might be associated to any possible residual effect of peroxide remaining in the hard tooth tissue (25,26). It is hypothesized that the absence of pulpal pressure in extracted teeth can reduce the removal of peroxide and its products, mainly than located inside the dentinal tubules; while these components can produce additional bleaching effect (27).…”

Section: Discussionmentioning

confidence: 99%

Impact of Microabrasion on the Effectiveness of Tooth Bleaching

2017

View full text Add to dashboard Cite

The aim of the present study was to evaluate the effect of prior microabrasion on the teeth color change and tooth bleaching effectiveness. Eight sound molars were mesiodistally sectioned and the halves were randomly allocated to receive enamel microabrasion or non-abrasion (control) in one of surfaces (buccal or lingual), while the remaining surface received the other treatment. The tooth color on baseline was evaluated by spectrophotometer (CieL*a*b system). After the microabrasion procedure, the tooth color was measured again. Following, the specimens were bleached with 35% hydrogen peroxide for two sessions with one-week interval. The color was re-evaluated 7 days after each section and 30 days after the second session. The effect of enamel microabrasion on color changes was evaluated by paired T-test. Deltas L*, a*, b*, and E were calculated and data submitted to 2-way repeated measure ANOVA followed by Tukey`s test. Paired T-test was also used to assess possible differences on the ultimate color achieved after tooth bleaching. Enamel microabrasion reduced the lightness and increased the redness of specimens. Specimens that received microabrasion presented higher values of ∆L* than control after each bleaching procedure; and higher ∆a* after the 2 nd bleaching session. However, the prior enamel microabrasion did not affect the ultimate values of color parameters. Despite enamel microabrasion have modified the tooth color, this procedure did not affect the ultimate results achieved with tooth bleaching using a high-concentrated hydrogen peroxide.

show abstract

Section: Discussionmentioning

confidence: 99%

Impact of Microabrasion on the Effectiveness of Tooth Bleaching

2017

View full text Add to dashboard Cite

show abstract

“…Sodium ascorbate presents low toxicity and has a neutral pH (approximately 7), being appropriate for use on dental structures without producing undesirable damages (23). The reaction between SA and oxygen into dentin peaks within 1 min and thereafter the reaction reduces considerably (2). Therefore, in this study, sodium ascorbate at both concentrations was applied with two applications for one minute each (11,24).…”

Section: Immediate Bonding To Bleached Dentinmentioning

confidence: 99%

“…Since the catalysis of most bleaching agents produces hydrogen peroxide, this is the main chemical responsible for the process (2). In bleaching procedure, reactive oxygen from hydrogen peroxide diffuses through the dentinal tubules and oxides the pigments, which absorb less light (3).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, it was shown that sodium ascorbate concentration should be proportional to the one used for bleaching (11). In other words, when hydrogen peroxide is used at 35%, similar concentration of sodium ascorbate must be employed for effective removal of oxygen from the dental tissue (2,11). Nevertheless, little is known about immediate bond strength of composite resin to bleached dentin subjected to the application of 35% sodium ascorbate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bonding Effectiveness of Universal Adhesive to Intracoronal Bleached Dentin Treated with Sodium Ascorbate

et al. 2016

View full text Add to dashboard Cite

This study evaluated the effect of restorative protocol with sodium ascorbate on the shear bond strength (SBS) of a universal adhesive to intracoronal bleached dentin. One hundred-and-twenty bovine dentin fragments were randomly divided into 12 groups (n=10), according to the bleaching procedure (unbleached and bleached) and restorative protocol (no treatment, 10% sodium ascorbate -10SA, 35% sodium ascorbate -35SA and two-step etch-and-rinse -ER or one-step self-etch -SE Scotchbond universal adhesive approaches). Four whitening sessions were performed using 35% hydrogen peroxide. The samples from control groups were kept in relative humidity at 37 °C. Immediately after bleaching procedures, the assigned antioxidant solution was applied on dentin and restorative procedures were performed following either the ER or the SE approach. After 24 h, the specimens were subjected to SBS test. Data (MPa) were analyzed by ANOVA and Tukey's test (α=0.05). Lower SBS values were found for bleached specimens (8.54 MPa) compared with those unbleached (12.13 MPa) (p<0.05). The bond strength of the sodium ascorbate-treated groups was higher than those untreated, regardless of the strategy employed (p<0.05). Groups restored without sodium ascorbate showed lower bond strength values for both ER (8.32 MPa) and SE (8.28 MPa) adhesive strategies. The group treated with 10SA submitted to ER approach (10.14 MPa) was similar to untreated groups (p>0.05). It may be concluded that bond strength of composite resin to intracoronal dentin was affected by restorative protocol and reduced by bleaching.

show abstract

“…14,16 These studies used shear bond strength to evaluate how antioxidants enhance adhesion, with favorable results. Nevertheless, few studies have evaluated microleakage as an indicator of the bleaching effect on adhesion, [20][21][22] and there is only one study that considered using antioxidants after an office bleaching protocol, 23 but it did not evaluate the ensuing restoration placement. Since office bleaching proposes a faster treatment, the use of antioxidants after office bleaching protocols could allow immediate composite restorations, thus avoiding a waste of time.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sodium Ascorbate and Ascorbic Acid Hydrogels on Microleakage of Composite Restorations after an Office Bleaching Protocol

et al. 2014

View full text Add to dashboard Cite

Aim: This study evaluated the infl uence of 20% sodium ascorbate (SA) and 10% ascorbic acid (AA) hydrogels on the microleakage of class V composite restorations after an offi ce bleaching protocol (B). Methods: Sixty bovine incisors were sectioned at one point extending 8 mm from the amelodentinal junction toward the incisal edge, and at a second point extending 2 mm from the amelodentinal junction toward the root apex. Root canals were sealed with a composite and the teeth were divided into 5 groups. In Group C (control group), the teeth were prepared (P; 4 × 3 mm depth × diameter; diamond bur 3131, KG Sorensen), etched, rinsed (ER), submitted to an adhesive system protocol (Ambar, FGM), and restored (R) with a microhybrid composite (Opallis, FGM); In Group IR, the teeth were bleached (B; 2 sessions, 1 week interval, 35% hydrogen peroxide, Whitness HP Blue, FGM) + P + ER + R; In Group SA, teeth were B + P + SA (20%/15 minutes) + ER + R; In Group AA, teeth were B + P + AA (10%/15 minutes) + ER + R; and in Group MR, the teeth were B + stored in water (37°C/14 days) + P + ER + R. Specimens were submitted to an aging process by thermocycling (5 × 10 4 cycles of 5°C and 55°C with a dwelling time of 30 s), varnish-sealed, immersed in basic fuchsin (3 h), washed and sectioned with a diamond disc. Microleakage was measured with the aid of ImageTool  software. ANOVA and Tukey's post hoc test (p < 0.05) were applied. Results: Microleakage (mm) and standard deviations per group were as follows: C, 0.29 (0.06) A ; IR, 1.86 (0.15) C ; SA, 1.08 (0.09) B ; AA, 1.07 (0.10) B ; MR, 1.02 (0.12) B . Conclusions: Bleached teeth submitted to superfi cial treatment with 20% SA and 10% AA applied for 15 minutes prior to restoration presented reduced microleakage, as compared to immediately restored bleached teeth. Use of these antioxidants led to a microleakage comparable to that observed after a waiting period of 14 days prior to restoration. Dental Materials; Dental Leakage; Tooth Bleaching.Efeito de hidrogéis de ascorbato de sódio e ácido ascórbico na microinfi ltração de restaurações de resina composta realizadas após aplicação de um protocolo de clareamento em consultório • Objetivo: Este estudo avaliou a infl uência da utilização de hidrogéis de ascorbato de sódio (SA) e ácido ascórbico (AA) na microinfi ltração de restaurações classe V de resina composta realizadas após a aplicação de um protocolo de clareamento em consultório (B). Métodos: Sessenta incisivos bovinos foram seccionados a 8 mm da junção amelodentinária em direção incisal e a 2 mm em direção ao ápice radicular. Os canais radiculares foram selados com um compósito e os dentes foram divididos em 5 grupos: no grupo C (controle), os dentes foram preparados (P; 4 × 3 mm profundidade × diâmetro; ponta diamantada 3131, KG Sorensen), condicionados, lavados (ER), submetidos a um protocolo adesivo (Ambar, FGM) e restaurados (R) com uma resina composta microhíbrida (Opallis, FGM); no grupo IR, os dentes foram clareados (B; 2 sessões, 1 semana de intervalo, peróxido de hidr...

show abstract

Assessing the use of 35 percent sodium ascorbate for removal of residual hydrogen peroxide after in-office tooth bleaching

Cited by 44 publications

References 25 publications

Impact of Microabrasion on the Effectiveness of Tooth Bleaching

Impact of Microabrasion on the Effectiveness of Tooth Bleaching

Bonding Effectiveness of Universal Adhesive to Intracoronal Bleached Dentin Treated with Sodium Ascorbate

Effect of Sodium Ascorbate and Ascorbic Acid Hydrogels on Microleakage of Composite Restorations after an Office Bleaching Protocol

Contact Info

Product

Resources

About