Effects of silica coating and silane surface conditioning on the bond strength of rebonded metal and ceramic brackets

Atsü, Saadet Sağlam; Çatalbaş, Bülent; Gelgör, İbrahim Erhan

doi:10.1590/s1678-77572011000300010

Cited by 21 publications

(38 citation statements)

References 26 publications

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“…3,18 In several cases, values greater than 25 MPa have been observed, 3,18 at which point the chances of enamel damage are increased. 5 Without ceramic base treatment, under the different conditions outlined, the average bond values obtained in this study ranged from 7.08 to 12.42 MPa.…”

Section: Discussionmentioning

confidence: 98%

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: Discussionmentioning

confidence: 98%

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

2013

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“…Bishara S et al 10 showed that acceptable bond strengths can be produced by use of hydrofluoric acid with silane coupling agent, which is similar to the results in our study. Atsu et al 11 showed that in comparison to sandblasting, silica coating with aluminum trioxide particles followed by silanization resulted in higher bond strengths of rebonded brackets. This study aimed at evaluating a suitable method of bonding orthodontic brackets onto porcelain surface that could help the clinician choose a method that is clinically acceptable.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Shear Bond Strength of Metal Brackets Bonded to Porcelain Surface using Different Surface Conditioning Methods: An in vitro Study

Girish

Dinesh²,

Bhat³

et al. 2012

The Journal of Contemporary Dental Practice

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Aim: To evaluate and compare the shear bond strength of metal brackets bonded to ceramic surfaces using different conditioning methods and to assess the site of bond failure after debonding. Materials and methods:A total of 70 ceramic surfaces were produced with uniform shape, size and composition. The samples were divided into 7 groups (each of 10 samples).Group 1 was the control group (untreated surface); in group 2 the surface were roughened with a diamond bur; in group 3 the surface were etched with hydrofluoric acid; in group 4 the surfaces were sandblasted; in group 5 the surfaces roughened with bur and silane applied; in group 6 the surfaces were etched with hydrofluoric acid and silane applied and in group 7 the surfaces were sandblasted and silane applied.To all the above groups, metal orthodontic brackets were bonded with light cure adhesive. The brackets were later stored in artificial saliva and incubated at 37°C (24 hours). The samples were then subjected to shear bond strength test using an Instron universal testing machine. The debonded porcelain surfaces were then studied under stereomicroscope to assess site of bond failure.Results: Sandblasting the ceramic surface and silane application showed the highest bond strength. Stereomicroscope examination after debonding showed that the bond failure is at bracket-adhesive interface in four groups namely hydrofluoric acid, sandblasting, hydrofluoric acid with silane and sandblasting with silane. Conclusion:Sandblasting with silane combination produced the highest shear bond strength, so it is a clinically suitable method for bonding orthodontic metal brackets onto ceramic surface.Clinical relevance: Bonding orthodontic brackets to ceramic crowns of patients has been a tough task. In this study, different conditioning methods were used to treat the ceramic surfaces before bonding. The results showed that sandblasting the ceramic surface prior to application of silane produced the highest shear bond strength which is clinically suitable to reduce bond failures.

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“…In Orthodontics, orthodontic accessory bonding is temporary, therefore, the bond strength must be sufficient to resist the forces applied during treatment, and on the other hand, fragile enough to allow debonding at the end of treatment, without damaging the teeth and the restorations they may present [3]. Nowadays, ceramics are considered the material of choice for indirect restorations, particularly because of the advantages they offer, such as biocompatibility, high compressive strength and resistance to abrasion, chemical and color stability, radiopacity and excellent potential for simulating the appearance of natural teeth [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Orthodontic shear bond strength to porcelain surface in wet conditions

Guimarães¹,

Cocco

Bueno

et al. 2016

Rev. Odonto Ciênc. (Online)

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Objective: To evaluate the shear bond strength of orthodontic accessories bonded to a porcelain surface after storage in water. Methods: One-hundredand-twenty feldspathic porcelain discs were divided into 4 groups, according to the surface treatment: Group 1 -37% phosphoric acid etching; Group 2 -10% fluorhydric acid; Group 3 -37% phosphoric acid and silane application; Group 4 -10% fluorhydric acid and silane application. After the accessories were bonded, the sample was divided into two subgroups, according to the time interval of storage in distilled water: Control -24 hours; and Test -150 days. Shear bond strength was determined using a universal test machine, and failure type was verified by scanning electron microscopy. Results: In the test groups there was reduction in shear bond strength, particularly when silane was used. Test Groups 2 and 4 presented shear bond strength values within those proposed as adequate for orthodontic bonding. Groups 1 and 3 presented adhesive failures between porcelain and resin, whereas in Groups 2 and 4 cohesive failures in porcelain were recorded. Conclusion: Storage in water for 150 days decreased the bond strength at silanized interfaces. Fluorhydric acid etching generates adequate bond strength in wet conditions, however, increases the fracture rate in porcelain.Key words: Shear strength; Dental porcelain; Dental bonding; Orthodontics Resistência ao cisalhamento de colagem ortodôntica em superfície de porcelana em condições úmidas resumo RESUMO Objetivo: Avaliar resistência ao cisalhamento da colagem de acessórios ortodônticos a superfície de porcelana após armazenamento em água. Metodologia: Cento e vinte discos de porcelana feldspática foram divididos em 4 grupos, de acordo com o tratamento de superfície: Grupo 1 -condicionamento com ácido fosfórico a 37%; Grupo 2 -ácido fluorídrico 10%; Grupo 3 -ácido fosfórico 37% e silano; Grupo 4 -ácido fluorídrico 10% e silano. Após a colagem dos acessórios, a amostra foi dividida em dois subgrupos, de acordo com o tempo de armazenamento em água destilada: Controle -24 horas; e Teste -150 dias. A resistência ao cisalhamento foi determinada utilizando-se uma máquina de ensaios universal, e o tipo de falha após a descolagem através de microscópio eletrônico de varredura. Resultados: Nos grupos teste houve redução na resistência ao cisalhamento, particularmente quando o silano foi utilizado. Grupos Teste 2 e 4 apresentaram valores de resistência ao cisalhamento dentro daqueles propostos como adequados para colagem ortodôntica. Grupos 1 e 3 apresentaram falhas adesivas entre porcelana e resina, enquanto nos grupos 2 e 4 falhas coesivas em porcelana foram averiguadas. Conclusão: Armazenamento em água por 150 dias diminui a força de adesão em interfaces silanizadas. Condicionamento com ácido fluorídrico gerou força de adesão adequada em condições úmidas; entretanto, aumentou a taxa de fratura em porcelana.Palavras-chave: Resistência ao cisalhamento; Porcelana dentária; Colagem dentária; Ortodontia 60Rev Odonto Cienc 2016;31(2):5...

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Effects of silica coating and silane surface conditioning on the bond strength of rebonded metal and ceramic brackets

Cited by 21 publications

References 26 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

Comparison of Shear Bond Strength of Metal Brackets Bonded to Porcelain Surface using Different Surface Conditioning Methods: An in vitro Study

Orthodontic shear bond strength to porcelain surface in wet conditions

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