The effect of enamel bleaching on the shear bond strengths of metal and ceramic brackets

Öztaş, Evren; Bağdelen, G; Kılıçoğlu, Hülya; Ulukapı, Haşmet; Aydın, İsmail

doi:10.1093/ejo/cjq193

Cited by 19 publications

(18 citation statements)

References 33 publications

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“…Contrary to previous observations, 21 this study indicates that after 14 days of storage in saliva, there was a significant difference between bleached and unbleached enamel, with 10% of the influence on the shear bond strength due to the bleaching treatment. This reduction in adhesive strength after 14 days was also found by Stokes et al, 12 who used hydrogen peroxide for 2 hours on enamel.…”

Section: Discussioncontrasting

confidence: 99%

“…16,20 Enamel exposed to bleaching agents presents slight morphologic alterations, whereas phosphoric acid treatment causes severe morphologic alterations. 21 Different types and concentrations of bleaching agents have been studied. 7,12,13,22,23 Hydrogen peroxide was chosen in this study because it can penetrate into the enamel more efficiently than carbamide peroxide as a result of its lower molecular weight.…”

Section: Discussionmentioning

confidence: 99%

“…16,21,22 However, the delay period for bonding orthodontic brackets after bleaching is controversial because although certain studies have indicated that adhesive procedures can be performed after 24 hours, 2,21 7 days, 22,23 14 days and 30 days, 2 other studies have contradicted these results. 24 An adequate time after bleaching is fundamental to normal penetration of conventional adhesive onto the enamel surface.…”

Section: Discussionmentioning

confidence: 99%

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Influence of microhybrid resin and etching times on bleached enamel for the bonding of ceramic brackets

2013

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The aim of this study was to evaluate the shear bond strength (SBS) of polycrystalline ceramic brackets (PCB) bonded after bleaching treatment using different composite resins and enamel etching times. A total of 144 bovine incisors were randomly divided into two study groups (n = 72, each) as follows: G1, enamel bleached with 35% hydrogen peroxide, and G2 (control group), enamel unbleached. After the bleaching treatment, the samples were stored in artificial saliva for 14 days. These groups were further divided into two subgroups (n = 36, each) as follows: GA, brackets bonded with Transbond XT (3M) and GB, brackets bonded with Filtek Z250 (3M). For each resin used, three different etching times with 37% phosphoric acid (15, 30 and 60 seconds) were tested. SBS tests were performed using a universal testing machine (EMIC), and the adhesive remnant index (ARI) score was verified. Significant differences among the three experimental conditions and interactions between the groups were observed. The type of composite resin accounted for 24% of the influence on the bond strength, whereas the etching time and bleaching treatment accounted for 14.5% and 10% of the influence on bond strength, respectively. The ARI revealed that the most common area of adhesion failure was at the composite resin-bracket interface. The type of composite resin, etching time and external bleaching significantly influenced the SBS of PCB on enamel, even after 14 days of saliva storage.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Influence of microhybrid resin and etching times on bleached enamel for the bonding of ceramic brackets

2013

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“…Our results were in correlation with the results obtained by Chauhan et al 15 who also reported similar findings in their study. Oztaş et al 16 assessed the impact of bleaching and late bonding on the shear bond strengths of metal and ceramic brackets bonded with light and chemically cured composite resin to human teeth. They analyzed a total of 120 freshly extracted human premolars and divided them randomly into three study groups with 40 specimens in each group.…”

Section: Discussionmentioning

confidence: 99%

In vitro Assessment of Influence of Various Bleaching Protocols on the Strength of Ceramic Orthodontic Brackets bonded to Bleached Tooth Surface: A Comparative Study

Iska

Devanna

Singh³

et al. 2017

The Journal of Contemporary Dental Practice

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Introduction: Esthetics is one of the common issues because of which patients consult dental orthodontic treatment. Two ways of tooth bleaching are available these days, which includes in-office bleach and home bleach. Various bleaching protocols are available these days for treating the tooth surfaces. Hence, we planned the present study for investigating the impact of various intracoronal bleaching protocols on shear bond strength of ceramic brackets bonded to tooth surface after bleaching. Materials and methods:The present study included assessment of 100 extracted maxillary central incisors with the integrated buccal surface. A resin block was made and individual teeth were embedded in each block. Root canal therapy procedure was performed in all the teeth, after which 2 mm short of tooth apex up to the level of cementoenamel junction, removal of the root canal filling was done. All the samples were broadly divided into four study groups with 25 samples in each group. Bleaching procedure was carried in all the samples intracoronally followed by testing of shear bond strength using universal force testing machine. Following the modified adhesive remnant index Results: In the control group, mean shear bond strength was found to be 17.9 MPa. While comparing the carbamide peroxide (CP) group with sodium perborate study group, we observed a statistically significant difference. Nonsignificant results were obtained while comparing the shear bond strength in between sodium perborate group and hydrogen peroxide (HP) group. Conclusion:Intracoronal bleaching does affect the shear bond strength of ceramic brackets. Sodium perborate bleaching influences shear bond strength more strongly than other bleaching agents such as CP and HP.Clinical significance: In patients undergoing orthodontic treatment, HP is a preferred agent where bleaching has to be followed by orthodontic bonding to the tooth surface.

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“…The results for the shear bond strength of the bleached groups in this study are in agreement with previous studies, in which there was no reduction in mean shear bond strength at least one week following bleaching with carbamide peroxide. [16][17][18] When analyzing the results from bonding studies, it is important to consider the minimum value in the series together with the mean values. In the 24-hour interval test series, the lowest shear bond strength in the present study was 10.13 MPa, found in the Transbond XT primer group on unbleached teeth.…”

Section: Discussionmentioning

confidence: 99%

Effect of tooth bleaching on shear bond strength of a fluoride-releasing sealant

Phan¹,

Akyalçın

Wiltshire

et al. 2012

The Angle Orthodontist

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Objective: To evaluate the effect of an in-office plus at-home bleaching protocol on shear bond strength of orthodontic buttons when using a fluoride-releasing sealant. Materials and Methods: Extracted human molars (160) were randomly divided into bleached (n 5 80) and unbleached groups (n 5 80). The bleached group was treated with 45% carbamide peroxide for 30 minutes, followed by five applications of 20% carbamide peroxide at 24-hour intervals. After 2 weeks, lingual buttons were bonded on the teeth in both groups using either Transbond XT primer or Pro Seal sealant. The teeth were then stored in artificial saliva and subjected to shear testing at 24 hours and 3 months using a Zwick Universal Test Machine. Comparisons of mean shear bond strength values were made with the analysis of variance test. The Fisher's exact test was used to evaluate the adhesive remnant index scores. Results: The analysis of variance of the 24-hour results indicated a significant difference between the four subgroups (P , .0011). Further simple t-tests indicated that the differences were significant only between bleached and unbleached subgroups (P , .0011). The 3-month results showed the mean shear bond strengths of the unbleached group using Pro Seal sealant was significantly lower than that of the other, though still greater than clinically minimal suggested bond strengths. Interestingly, 15% of the bleached teeth exhibited enamel fracture at the 3-month testing. Conclusion: Both Pro Seal sealant and Transbond XT primer demonstrated reliable shear bond strength values on both bleached and unbleached teeth over time. (Angle Orthod. 2012;82:546-551.)

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The effect of enamel bleaching on the shear bond strengths of metal and ceramic brackets

Cited by 19 publications

References 33 publications

Influence of microhybrid resin and etching times on bleached enamel for the bonding of ceramic brackets

Influence of microhybrid resin and etching times on bleached enamel for the bonding of ceramic brackets

In vitro Assessment of Influence of Various Bleaching Protocols on the Strength of Ceramic Orthodontic Brackets bonded to Bleached Tooth Surface: A Comparative Study

Effect of tooth bleaching on shear bond strength of a fluoride-releasing sealant

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