Shear-bond-strength of orthodontic brackets to aged nano-hybrid compositeresin surfaces using different surface preparation

Demirtas, Hatice Kubra; Akın, Mehmet; İleri, Zehra; Başçiftçi, Faruk Ayhan

doi:10.4012/dmj.2014-115

Cited by 20 publications

(24 citation statements)

References 23 publications

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“…In the current study, aging was performed by water storage for 24 hours and thermocycling between 5-55°C for 5000 cycles at first and 2000 cycles later. Thermocycling accelerates the process of aging and water diffusion (22). Temperature difference between water baths in this process results in water sorption at the interface of the two materials with different coefficients of thermal expansion and eventually degrades the resin structure (23).…”

Section: Discussionmentioning

confidence: 99%

“…Assessment of the results of ARI scores showed that most sandblasted samples experienced fracture in the composite base. Demirtas et al , in 2015 reported the highest SBS following sandblasting with Al2O3 particles; they suggested this method to increase the bond strength of brackets due to minimal area of the prepared surface (22). Bayram et al , in 2011 reported the highest bond strength following surface roughening by diamond bur.…”

Section: Discussionmentioning

confidence: 99%

“…However, it should be noted that surface roughening by bur removes resin and exposes filler particles; thus, it may compromise the esthetics of the restoration, which is not favorable in anterior teeth (22). On the other hand, in order to prevent fracture or cracking of the surface, resin remnants should preferably remain on dental or restoration surfaces after bracket debonding (26).…”

Section: Discussionmentioning

confidence: 99%

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Shear bond strength of orthodontic metal brackets to aged composite using three primers

2017

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BackgroundThis study aimed to assess the effect of surface preparation with sandblasting and diamond bur along with the use of three primers on shear bond strength (SBS) of metal brackets to aged composite.Material and MethodsIn this in vitro, experimental study, 60 Filtek Z250 composite discs were fabricated (10×2mm), immersed in distilled water for 24 hours and subjected to 5000 thermal cycles. They were randomly divided into two groups (n=30) of sandblasting with aluminum oxide particles for 10 seconds and surface roughening with bur. Each group was randomly divided into three subgroups (n=10) for use of Transbond XT, Assure Plus and Composite Primer. Metal brackets were bonded and the samples were stored in distilled water for 24 hours followed by 2000 thermal cycles. The SBS of brackets was measured and the adhesive remnant index (ARI) score was calculated. The data were analyzed by one-way ANOVA, t-test and Chi square test.ResultsThe difference in the mean SBS was not significant among the six subgroups. ConclusionsAll combinations of primers and surface preparation methods provided adequately high SBS between brackets and aged composite surfaces. Considering the ARI scores, surface roughening by bur is superior to sandblasting. Key words:Shear strength, composite resins, orthodontic brackets, aged composite, surface preparation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Shear bond strength of orthodontic metal brackets to aged composite using three primers

2017

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“…This agrees with Hamano et al 33,34 . as the dentin bonding agent was not mixed with acetone instead the acetone was applied separately similar to Hamano et al 33 There was an agreement 15,21,35 that mechanical methods of surface treatment provided a significant increase in bond strength in composite to composite adhesion. According to Bayram et al 21 , Al2O3 particle abrasion and roughening with bur resulted in the highest SBS.…”

Section: Surface Treatmentmentioning

confidence: 95%

Evaluation of three methods of surface treatment for bonding orthodontic metal brackets to resin composite in vitro

Darwish

Abdallah

Mowafy

2020

Egyptian Orthodontic Journal

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Objective: The aim of this study is to compare shear bond strength of orthodontic stainless steel brackets to resin composite surfaces In vitro using three different methods of surface treatment. Materials and methods: 60 composite resin discs, 6 mm in diameter and 2 mm in height, were prepared and aged by immersion in water for 4 weeks. After ageing, the specimens were randomly assigned to one of the following groups: (1) Control with no surface treatment, (2) 99 per cent Acetone, (3) methyl methacrylate monomer, (4) Diamond bur. The metal brackets were bonded to composite surfaces by means of an orthodontic adhesive. All specimens were stored in water for 1 week. Shear Bond Strength values were tested using a universal testing machine at a crosshead speed of 1 mm/minute, the brackets bases and corresponding RC discs were examined under stereomicroscope at 10X magnification for adhesive remnant evaluation. Shear bond strength values were analyzed using 1-way analysis of variance (ANOVA)), Adhesive remnant index scores were analysed using Chi-square test using Monte Carlo correction. Significance of the obtained results was judged at the 5% level (P ≤ 0.05). Results: The results of 1-way ANOVA for SBS means showed no statistical significant difference among the 4 groups (P = 0.564). groups showed a statistically significant difference (MCp = 0.039). Chi square comparisons of ARI scores showed statistically significant difference only between group 1 (control) with groups 3 (P1= 0.003) and group 4 (P1= 0.046) 65 Volume 48 -December 2015 CONCLUSIONSurface treatment with acetone, MMA monomer or roughening with diamond bur does not affect the SBS of RC stored in water for 4 weeks.

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“…The bond strength of brackets can be effected by the surface preparation techniques, 27 bonding technique, 28 and the type of bonding materials. 29 Similarly, our results demonstrated that the type of bonding agent is important for the shear bond strength.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Shear Bond Strengths of Ceramic Brackets Using either a Self-Etching Primer or the Conventional Method after Intracoronal Bleaching

Ozlu¹,

Koçak²,

Koçak³

et al. 2016

Turk J Orthod

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Objective: To evaluate the initial shear bond strengths (SBSs) of ceramic brackets using either a self-etching primer (SEP) or the conventional method (CM) after intracoronal bleaching with sodium perborate and distilled water.Methods: Eighty human incisors were divided into four groups according to bleaching and bonding procedures: Group 1, bleaching was not applied and the brackets were bonded with a self-etching primer; Group 2, bleaching was not applied and the brackets were bonded with the conventional method; Group 3, intracoronal bleaching with sodium perborate was applied for three weeks and the brackets were bonded with a self-etching primer; and Group 4, intracoronal bleaching with sodium perborate was applied for three weeks and the brackets were bonded with the conventional method. A self-etching primer (Transbond Plus) was applied as recommended by the manufacturer. After SEP application, the ceramic brackets were bonded with a light-curing adhesive (Transbond XT). For the conventional method, the teeth were etched with 37% phosphoric acid. After etching, a thin uniform coat of primer (Transbond XT Primer) was applied and the ceramic brackets were bonded with a light-curing adhesive (Transbond XT). SBSs were measured after water storage for 30 days, after 1000 cycles of thermocycling between 5°C and 55°C. Bond failure location was determined with the Adhesive Remnant Index (ARI).Results: For the SEP method, there was no significant difference between SBS values of the bleaching and non-bleaching groups. Furthermore, for the conventional method, the SBS value of the non-bleaching group was not significantly different from that of the bleaching group. SBS values of the SEP method presented significant differences from those of the conventional method (p<0.001). SBS values of SEP application decreased with and without bleaching. The ARI scores did not show any significant difference among the groups (p=0.174). Conclusion:Intracoronal bleaching with sodium perborate and distilled water did not affect the SBS values of ceramic brackets.

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Shear-bond-strength of orthodontic brackets to aged nano-hybrid compositeresin surfaces using different surface preparation

Cited by 20 publications

References 23 publications

Shear bond strength of orthodontic metal brackets to aged composite using three primers

Shear bond strength of orthodontic metal brackets to aged composite using three primers

Evaluation of three methods of surface treatment for bonding orthodontic metal brackets to resin composite in vitro

Comparison of the Shear Bond Strengths of Ceramic Brackets Using either a Self-Etching Primer or the Conventional Method after Intracoronal Bleaching

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