Can previously bleached teeth be bonded safely?

Uysal, Tancan; Başçiftçi, Faruk Ayhan; Üşümez, Serdar; Sarı, Zafer; Buyukerkmen, Ahmet

doi:10.1016/s0889-5406(03)00151-3

Cited by 85 publications

(107 citation statements)

References 14 publications

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“…2,[4][5][6][7] Moreover, there are other reasons for delaying restorative procedures, such as reducing postoperative sensitivity and to allow time for color rebound, which may alter esthetic results. [8][9][10] It is worth noting that most of the bonding studies have been conducted with resins placed primarily in enamel, 1,7,11,12 while some recent studies evaluated the effect of tooth bleaching on bonding to dentin. 2,[13][14][15][16][17] Most restorative procedures use enamel and dentin as substrates for adhesion.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sodium Ascorbate on Dentin Bonding After Two Bleaching Techniques

Briso

Rahal

Sundfeld

et al. 2014

Operative Dentistry

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Bleaching with either 10% carbamide peroxide or 35% hydrogen peroxide impairs the formation of the hybrid layer, resin tags, and bond strength. The use of sodium ascorbate following bleaching diminishes this adverse effect in the case of 10% carbamide peroxide but not so when 35% hydrogen peroxide is used as the bleaching agent. SUMMARYThe purpose of this study was to analyze the influence of 10% sodium ascorbate (SA) on the hybrid layer, resin tag length, and bond strength to dentin after bleaching. Six groups were tested: G C, control; G SA, sodium ascorbate (SA) + restoration; G CP, bleaching with carbamide peroxide (CP) + restoration; G CP+SA, bleaching with CP + SA+ restoration; G HP, bleaching with 35% hydrogen peroxide (HP) + restoration; and G HP+SA, HP + SA + restoration. After dental bleaching, the dentin was exposed and the antioxidant solution was applied to groups G SA, G CP+SA, and G HP+SA, before bonding procedures. The teeth were sectioned in the mesiodistal direction. One section was decalcified, and the specimens were embedded in paraffin and sectioned in the longitudinal direction with a thickness of 6 lm. Fifteen slices of each specimen were selected according to a systematic sample of slices with an interval proportional to the total number of slices obtained for each tooth. The specimens were stained using the Brown & Brenn method, and an optic microscope was used to analyze the hybrid layer thickness and resin tag length. The remaining tooth segment was sectioned into stick-shaped specimens and used for microtensile bond strength testing (0.5 mm/min). Statistical analysis was performed using two-way analysis of variance and Fisher test. The results for hybrid layer +

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Section: Introductionmentioning

confidence: 99%

Effect of Sodium Ascorbate on Dentin Bonding After Two Bleaching Techniques

Briso

Rahal

Sundfeld

et al. 2014

Operative Dentistry

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“…Most authors 2,4,8,12,16 concluded that bleaching adversely affects the SBS of orthodontic brackets when the bonding procedure is performed immediately or delayed by up to 1 month. Bishara et al 6,11 and Uysal et al 5 contradicted the studies that reported adverse effects of bleaching agents on SBS of brackets. They suggested that bleaching with 10% carbamide peroxide or 35% hydrogen peroxide did not adversely affect SBS of brackets.…”

Section: Discussionmentioning

confidence: 96%

“…Orthodontists are interested in determining whether any of these changes in the enamel surface also result in alteration of its adhesive characteristics with regard to orthodontic bonding materials. Several authors 5,6,11 found no adverse effect of bleaching on bond strengths of orthodontic brackets. However, many others 2,7,12 have reported a significant reduction in the bond strength of brackets after bleaching.…”

Section: Introductionmentioning

confidence: 98%

“…3 Hydrogen peroxide acts as a strong oxidizing agent through the formation of reactive oxygen molecules; these reactive molecules attack long-chained, darkcolored chromophore molecules and split them into smaller, less colored, and more diffusible molecules. 3 Various studies 2,[4][5][6][7] have evaluated the effects of bleaching on the SBS of orthodontic brackets with the office bleaching method. It has been demonstrated [8][9][10] that 35% hydrogen peroxide solutions change enamel structure and composition.…”

Section: Introductionmentioning

confidence: 99%

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Effects of different bleaching methods on shear bond strengths of orthodontic brackets

Gungor

Özcan

Alkış

et al. 2012

The Angle Orthodontist

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Objective: To evaluate the effects of different bleaching methods on the shear bond strength (SBS) of orthodontic brackets. Materials and Methods: Forty-five freshly extracted premolars were randomly divided into three groups (n 5 15 per group). In group I, bleaching was performed with the office bleaching method. In group II, bleaching was performed with the home bleaching method. Group III served as the control. Orthodontic brackets were bonded with a light cure composite resin and cured with an LED light. After bonding, the SBS of the brackets were tested with a Universal testing machine. Results: Analysis of variance indicated a significant difference between groups (P , .001). The highest values for SBS were measured in group III (20.99 6 2.32 MPa). The SBS was significantly lower in groups I and II than in group III (P , .001). The lowest values for SBS were measured in group II (6.42 6 0.81 MPa). SBS was significantly higher in group I than in group II (P , .001). Conclusions: Both of the bleaching methods significantly affected the SBS of orthodontic brackets on human enamel. Bleaching with the home bleaching method affected SBS more adversely than did bleaching with the office bleaching method. (Angle Orthod. 2013;83:686-690.)

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“…7 Many of the bleaching systems available use different concentrations and various application forms as the active bleaching agents. [8][9][10] Several products have been used in bleaching procedures; however, undesirable side effects, such as tooth discoloration due to reaction products and excessive weakening of the tooth structure, led to abandonment of these materials, with maintenance only of hydrogen peroxide and sodium perborate. Tooth bleaching with hydrogen peroxide has been performed for over 100 years, 11,12 and the 10% carbamide peroxide was indicated as a bleaching agent by Haywood and Heymann in 1989, 13 in gel presentation, to be applied by the patient in a custom tray.…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcium Hydroxide on pH Changes of the External Medium after Intracoronal Bleaching

Jeronymo²,

Yui³

et al. 2011

The Journal of Contemporary Dental Practice

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Aim: This in vitro study evaluated the effect of calcium hydroxide on pH changes of the external medium after intracoronal bleaching. Materials and methods:A total of 50 extracted human premolars were prepared and filled with gutta-percha and endodontic sealer. The teeth were randomly divided into five groups according to the bleaching agents employed: (a) Sterile cotton pellet with distilled water (control group); (b) sodium perborate and distilled water; (c) sodium perborate and 10% carbamide peroxide; (d) sodium perborate and 35% hydrogen peroxide; (e) 35% hydrogen peroxide. The teeth were stored in vials containing distilled water and the pH values of the medium surrounding the teeth were analyzed. After 7-day storage, the bleaching agent was removed and replaced by calcium hydroxide, and the distilled water was changed, in which the teeth were kept stored for further 14 days. Measurement of pH of the external medium (distilled water) was performed 7 days after insertion of the bleaching agents, immediately, 7 and 14 days after insertion of the calcium hydroxide. Data were submitted to statistical analysis by the two-way ANOVA and Tukey , s test.Results: There were pH changes of the external medium at 7-day period after bleaching procedures. These results confirmed the diffusion of bleaching agents to the external medium. Conclusion:Calcium hydroxide increased the external medium pH and was effective for pH alkalinization after intracoronal bleaching.Clinical significance: Intracoronal bleaching of endodontically treated teeth may cause cervical root resorption. A possible explanation for this process is the passage of bleaching agents to the periodontal tissues yielding an inflammatory process. In an attempt to keep the neutrality of the periodontal pH, the calcium hydroxide has been recommended.Results of this study showed that this material should be always used after intracoronal bleaching.

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Can previously bleached teeth be bonded safely?

Cited by 85 publications

References 14 publications

Effect of Sodium Ascorbate on Dentin Bonding After Two Bleaching Techniques

Effect of Sodium Ascorbate on Dentin Bonding After Two Bleaching Techniques

Effects of different bleaching methods on shear bond strengths of orthodontic brackets

Effect of Calcium Hydroxide on pH Changes of the External Medium after Intracoronal Bleaching

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