Effect of different intracoronal bleaching methods on shear bond strength of ceramic brackets bonded to bleached enamel: An in-vitro study

Chauhan, Vikas; Kumar, Piush; Sharma, Payal; Shetty, Divya

doi:10.4103/jos.jos_149_16

Cited by 7 publications

(9 citation statements)

References 22 publications

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“…We observed statistically significant difference on comparing the mean shear bond strength in between various study groups (Table 3). 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.…”

Section: Discussionsupporting

confidence: 94%

“…From the results, they concluded that shear bond strength is unaffected by 20% CP. Impact of various methods of bleaching on the shear bond strength of ceramic brackets was assessed by Chauhan et al 15 They analyzed 60 freshly extracted maxillary central incisors and randomly divided into four study groups with 15 specimens in each group. They prepared the access cavity in all the extracted teeth, and after completing the root canal process, they removed the filling from cementoenamel junction till 2 mm short of apex.…”

Section: Discussionmentioning

confidence: 99%

“…Similar results have been reported previously in the literature. 15 Influence of intracoronal bleaching agents and protocols on the shear bond strength of orthodontic brackets was assessed by Gungor et al 3 They evaluated 60 freshly extracted mandibular incisors and divided them randomly into four study groups with 15 specimens in each group. After performing root canal therapy in each group, they removed the fillings from 2 mm short of apex till cementoenamel junction and applied zinc phosphate base.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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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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“…Therefore, the marginal sealing of temporary restorations can be affected by bleaching reactions [13,21] Loss of marginal integrity opens a microscopic space between the tooth and the restoration, leading to a cascade of events, such as leakage of bleaching components into the oral cavity, causing an acid taste, irritation, localized desquamation of the adjacent gingival and periodontal tissues, leakage of oral fluids and bacteria into the chamber cavity as well as a decrease in the effectiveness of the treatment [21][22][23][24][25][26]. The exact mechanism explaining peroxides action on each tooth substrate bleaching has not yet been fully elucidated [6,18,27,28], but over the years various authors have demonstrated that intracoronal bleaching agents also reach enamel [29,30].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Oxygen Expansion during Internal Bleaching with Enamel and Dentin: A Comparative In Vitro Study

Pallarés-Serrano

et al. 2021

Dentistry Journal

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Internal bleaching is a conservative, non-invasive, and simple treatment that is frequently performed in daily clinical practice. The present in vitro study analyzes the oxygen expansion of different bleaching agents resulting from the oxidation reaction when interacting with enamel and dentin. Enamel and dentin were crushed separately until obtaining a fine powder with particles of an approximate size between 0.06 and 0.2 mm. Each enamel and dentin sample were mixed with 37% carbamide peroxide (CP 37%), 30% hydrogen peroxide (HP 30%), sodium perborate (SP) combined with HP 30% (HP 30% + SP) and SP with distilled water (SP). A total of 280 1 mm diameter glass tubes were used with 70 for each bleaching agent (30 for powdered enamel evaluation, 30 for powdered dentin evaluation, and 10 controls). The bleaching agents were placed in the prepared tubes immediately after mixing the components. As expansion occurred, the oil inside the tube was displaced, through which the resulting expansion was evaluated and measured for 10 days. A significant expansion was observed that varied in magnitude according to the bleaching agent and the tooth structure used. Student’s t test and Welch’s ANOVA were used to analyze the data obtained. The highest mean expansion of both enamel and dentin was observed with 30% HP (66.6 mm for enamel, 94.5 mm for dentin) followed by HP 30% + SP (48.6 mm for enamel, 52.7 mm for dentin), CP 37% (38.4 mm for enamel, 52.6 mm for dentin) and finally SP with water (12.7 mm for enamel, 4.4 mm for dentin). It was observed that the expansion in the SP group with enamel was significantly lower than in the rest of the groups, while that registered for HP 30% was significantly higher. (p < 0.001). The results with dentin were similar, with a significantly lower expansion for SP and higher for HP 30% (p < 0.001). The oxygen expansion observed as a result of the interaction between bleaching agents and dental tissues could contribute to improving our understanding of bleaching and its results. These results suggest that bleaching agents react with the organic component of the tooth structure.

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“…In vitro studies of intracoronal bleaching focused on tooth fracture resistance, composition of calcium-silicate cements, their compressive strength, and bond strength to composite resin, adhesive bonding, orthodontic brackets www.srpskiarhiv.rs "Walking bleach" technique bonding to enamel and marginal integrity of temporary and permanent restorative materials following various intracoronal bleaching protocols [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Clinical efficiency of a sodium perborate - hydrogen peroxide mixture for intracoronal non-vital teeth bleaching

et al. 2020

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Introduction/Objective The aim was to evaluate initial efficiency of sodium perborate (tetrahydrate) and 30% hydrogen peroxide mixture for intracoronal non-vital teeth bleaching ("walking bleach" technique). Methods Forty patients with discolored teeth were included in the study. Based on their history and clinical examination, causes of discoloration were classified as necrotic pulp, "endo-sealer" or unknown. The "walking bleach" technique was performed by applying sodium perborate (tetrahydrate) and 30% hydrogen peroxide mixture intracoronally to cavity dentin walls. The mixture was renewed in seven-day intervals. Tooth color was assessed visually before, during, and after the procedure using the Vita Classical shade guide (Vita Zahnfabrik, Bad Säckingen, Germany). Numerical values or shade guide units (SGU) were assigned to Vita shade tabs on a bright-dark scale. Analysis of variance, t-test, correlation and regression analysis were used to analyze the data (p < 0.05). Results On average, 26 ± 9 days or 3-4 appointments were required for intracoronal bleaching to achieve the desired or best possible shade. Better clinical efficiency was found in the necrotic pulp group (17 ± 6 days; 8 ± 3 SGU) than in the "endo-sealer" group (42 ± 13 days; 4 ± 2 SGU) (p < 0.05). Age significantly influenced bleaching efficiency (p < 0.05). There was no significant correlation between bleaching efficiency and initial shade (p > 0.05). Conclusion Intracoronal, non-vital teeth bleaching ("walking bleach" technique) using sodium perborate (tetrahydrate) and 30% hydrogen peroxide mixture showed satisfactory clinical efficiency. Discoloration caused by pulp necrosis was treated more efficiently than that caused by endodontic sealers. Younger age had a positive effect and discoloration intensity had no effect on bleaching efficiency.

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Effect of different intracoronal bleaching methods on shear bond strength of ceramic brackets bonded to bleached enamel: An in-vitro study

Cited by 7 publications

References 22 publications

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

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

Assessment of Oxygen Expansion during Internal Bleaching with Enamel and Dentin: A Comparative In Vitro Study

Clinical efficiency of a sodium perborate - hydrogen peroxide mixture for intracoronal non-vital teeth bleaching

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