The Effect of Different Bleaching Treatments and Thermal-Mechanical Cycling on the Shear Bond Strength of Orthodontic Brackets

Carlos, Lilian Nascimento; Jorge, Olivia Santana; Paranhos, Luiz Renato; Vincenti, Sergio Augusto de Freitas; Pires‐de‐Souza, Fernanda de Carvalho Panzeri

doi:10.5152/turkjorthod.2018.17055

Cited by 9 publications

(7 citation statements)

References 27 publications

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“…Nesta revisão sistemática, 5 autores decidiram recriar o ambiente da cavidade oral imergindo as amostras em saliva artificial, submetendo-as a estresse termomecânico ou inserindo-as em uma incubadora [12,[14][15][16]18].…”

Section: Resultsunclassified

“…O uso de certos agentes (caseína fosfopeptídeo de cálcio amorfo, ascorbato de sódio, extrato de casca de mangostão, quercetina, vitamina C, chá verde e camomila) Em relação aos agentes adesivos e ao protocolo que os autores utilizaram foi avaliada uma heterogeneidade, pois apenas 6 autores utilizaram o mesmo sistema, portanto não é possível excluir se esse fator pode afetar o valor de resistência ao cisalhamento (RCS) [11,[14][15][16][17]19].…”

Section: Resultsunclassified

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Clareamento e Ortodontia

Duarte,

Rodrigues,

Ferreira

et al. 2023

Braz. J. Implantol. Health Sci.

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Nos tratamentos ortodônticos, o fator mais comum da descolagem dos braquetes ortodônticos é a força mastigatória contínua, mas outros fatores também podem estar relacionados, como os tratamentos clareadores. Esta revisão sistemática objetiva analisar a influência dos agentes clareadores nos valores de resistência ao cisalhamento (RCS) dos braquetes ortodônticos. Foi realizada busca nos bancos de dados PubMed, Scopus, Web of Science, Embase e Google Scholar com base na ferramenta PRISMA, na aplicação da estratégia PICO e dos critérios de inclusão e exclusão, sendo selecionados 11 artigos para análise e discussão. Tanto o peróxido de carbamida como o peróxido de hidrogênio afetam o valor de resistência ao cisalhamento (RCS), tendo, a maioria dos estudos, concordado com a necessidade de ampliar o tempo entre o clareamento dental e a colocação dos braquetes ortodônticos, para evitar a fratura da adesão dos braquetes. Embora existam diferentes variações de períodos de espera, os resultados desta revisão destacaram que um período de duas semanas foi o mais comum. Além disso, autores sugerem a utilização de produtos em pacientes onde não é possível atrasar a fase ortodôntica. Infere-se que o tipo de clareamento e sua concentração afetam negativamente o valor do RCS, mas existem outros fatores que podem desempenhar um papel adicional, como o tipo de braquete e o tipo de adesivo.

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Section: Resultsunclassified

Clareamento e Ortodontia

Duarte,

Rodrigues,

Ferreira

et al. 2023

Braz. J. Implantol. Health Sci.

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“…Another limitation was that this study only investigated the SBS at 24 h and did not examine the long-term SBS. However, Carlos et al demonstrated that the shear bond strength after bleaching was not affected by the artificial aging of the materials using thermocycling [48]. Lastly, the long-term stability of the 35% 3-O-ethyl-l-ascorbic acid reagent should be evaluated before it can be used as a ready-to-use product.…”

Section: Discussionmentioning

confidence: 99%

One-Step Surface-Treatment Reagent (35% 3-O-Ethyl-l-ascorbic Acid Plus 50% Citric Acid Solution) Restores the Shear Bond Strength of Metal Brackets Bonded to Bleached Human Enamel: An In Vitro Study

et al. 2023

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This study investigates how a new substance, composed of ethyl ascorbic acid and citric acid, affects the shear bond strength (SBS) of metal brackets when bonded to bleached teeth. Forty maxillary premolar teeth were used and randomly placed into four groups (n = 10): the control group did not undergo bleaching; the remaining groups underwent bleached using 35% hydrogen peroxide. In group A, 37% phosphoric acid was applied after bleaching. In group B, 10% sodium ascorbate was used for ten minutes before 37% phosphoric acid. In group C, 35%3-O-ethyl-l-ascorbic acid plus 50% citric acid solution (35EA/50CA) was applied for 5 min. The subgroups were bonded immediately after bleaching. The SBS was determined with a universal testing machine and analyzed using one-way ANOVA and then Tukey’s HSD tests. Adhesive remnant index (ARI) scores were determined with a stereomicroscope and analyzed with a chi-squared test. The significance level was 0.05. Group C demonstrated significantly higher SBS values than group A (p < 0.001), but was not significantly different than the control group or group C (p > 0.05). The ARI scores were significantly different among the groups (p < 0.001). In conclusion, enamel surface treatment using 35EA/50CA improved the reduced SBS to an acceptable clinical level and reduced the clinical chair time.

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“…The attachment was composite resin material bonded on the teeth. Previous studies have reported that bleaching treatment could reduce the shear bonding strength (SBS) of brackets (Carlos et al, 2018;Sadeghian et al, 2021). However, there are few studies on the change of SBS of composite resin attachment under the condition of clear aligner treatment.…”

Section: Introductionmentioning

confidence: 99%

Development and performance of a clear aligner film loaded with sustained release hydrogen peroxide gel

et al. 2023

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Introduction: Clear aligner treatment (CAT) has become popular over recent years because it is both comfortable and aesthetically acceptable. However, most of patients undergoing orthodontic treatment request dental bleaching. A safe and controlled bleaching treatment at the same time as the clear aligner treatment can save time and improve patient satisfaction with the outcome of the treatment.Aim: This study was aimed to develop a thermoforming film loaded with hydrogen peroxide as a clear aligner and detect its efficiency on teeth blenching and its influence on shear bonding strength for attachment.Methods: The thermoforming film loaded with sodium alginate-dopamine/Mesoporous silica nanoparticles compound gel was immersed in 6 wt% hydrogen peroxide solution and the hydrogen peroxide was loaded into mesoporous silica nanoparticle channels by capillary action. Then, a thermoforming film loaded with sustained-release hydrogen peroxide gel was made. Six dentition models were prepared with 90 isolated human premolars and divided into the experiment group, the condition control group and the blank control group, respectively. Then, the experiment group wore the clear aligner made by the thermoforming film loaded with hydrogen peroxide for 40 days; the conditional control group wore the clear aligner made by the ordinary thermoforming film for 40 days; and the blank control group wore no clear aligner. The aligners were updated every 10 days and the color of teeth was measured every 10 days. Tooth color should be determined by specific parameters (L, a* and b*). What’s more, in order to determine the influence of the thermoforming film loaded with sustained-release hydrogen peroxide gel on shear bonding strength for attachment. The shear bonding strength of attachment of isolated premolars were measured.Results: Isolated premolars treated by bleaching experiments showed an increase in L value (ΔL = 7.76 ± 0.64) and a decrease in both a* (Δa = −0.82 ± 0.12) and b* (Δb = −3.10 ± 0.21) values. However, the isolated premolars in conditional control group and blank control group exhibited that an decrease in L value (ΔLCCG = −0.91 ± 0.24; ΔLBCG = −0.86 ± 0.15)and a increase in both a* (ΔaCCG = 0.19 ± 0.05; ΔaBCG = 0.18 ± 0.04) and b* (ΔbCCG = 0.43 ± 0.11; ΔbBCG = 0.31 ± 0.10) value. While the shear bonding strength for attachment after bleaching was 22.78 ± 2.28 MPa, which had no significant change compared with the shear bonding strength for attachment without bleaching experiment (22.21 ± 2.77 MPa) (p > 0.05). Conclusion: A thermoforming film featuring the sustained release of hydrogen peroxide had a good bleaching effect on isolated teeth and had no significant influence on the shear bonding strength for attachment.

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The Effect of Different Bleaching Treatments and Thermal-Mechanical Cycling on the Shear Bond Strength of Orthodontic Brackets

Cited by 9 publications

References 27 publications

Clareamento e Ortodontia

Clareamento e Ortodontia

One-Step Surface-Treatment Reagent (35% 3-O-Ethyl-l-ascorbic Acid Plus 50% Citric Acid Solution) Restores the Shear Bond Strength of Metal Brackets Bonded to Bleached Human Enamel: An In Vitro Study

Development and performance of a clear aligner film loaded with sustained release hydrogen peroxide gel

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