Comparative in vitro study of the shear bond strength of brackets bonded with restorative and orthodontic resins

Isber, Hassan; Ambrósio, Aldrieli Regina; Carvalho, Paulo Eduardo Guedes; Valle-Corotti, Karyna Martins do; Siqueira, Danilo Furquim

doi:10.1590/s1806-83242011000100009

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…2 The etching time provided 14.5% of the difference in adhesive strength results, and the time of 30 seconds resulted in the greatest average strength, in accord with published studies. 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.…”

Section: Discussionmentioning

confidence: 99%

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: 99%

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

2013

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“…After the bonding procedure, specimens were immediately stored in distilled water, in a bacteriological incubator at 37 ± 1 o C. Tests were performed after 24 hours. 14 Shear bond strength was assessed by means of a universal testing machine, with a 50-kg load cell, operating at a speed of 0.5 mm/min 15 ( Fig 2 ).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of an alternative technique to optimize direct bonding of orthodontic brackets to temporary crowns

Dias

Pinzan-Vercelino

Tavares

et al. 2015

Dental Press J. Orthod.

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OBJECTIVE: To compare shear bond strength of different direct bonding techniques of orthodontic brackets to acrylic resin surfaces. METHODS: The sample comprised 64 discs of chemically activated acrylic resin (CAAR) randomly divided into four groups: discs in group 1 were bonded by means of light-cured composite resin (conventional adhesive); discs in group 2 had surfaces roughened with a diamond bur followed by conventional direct bonding by means of light-cured composite resin; discs in group 3 were bonded by means of CAAR (alternative adhesive); and discs in group 4 had surfaces roughened with a diamond bur followed by direct bonding by means of CAAR. Shear bond strength values were determined after 24 hours by means of a universal testing machine at a speed of 0.5 mm/min, and compared by analysis of variance followed by post-hoc Tukey test. Adhesive remnant index (ARI) was measured and compared among groups by means of Kruskal-Wallis and Dunn tests. RESULTS: Groups 3 and 4 had significantly greater shear bond strength values in comparison to groups 1 and 2. Groups 3 and 4 yielded similar results. Group 2 showed better results when compared to group 1. In ARI analyses, groups 1 and 2 predominantly exhibited a score equal to 0, whereas groups 3 and 4 predominantly exhibited a score equal to 3. CONCLUSIONS: Direct bonding of brackets to acrylic resin surfaces using CAAR yielded better results than light-cured composite resin. Surface preparation with diamond bur only increased shear bond strength in group 2.

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“…However, with any kind of simplification in clinical application procedure, there arises a concern in loss of bonding 7) . During the last decade, numerous studies were carried out to investigate the efficiency, durability, and robustness of contemporary bonding agents by evaluating their shear bond strength or tensile bond strength 6,[10][11][12][13][14][15] . While most TSERs 11) , TSSEs 11) , and AASs 12) were found to be suitable for orthodontic use, flowable composites failed to provide sufficient bonding strength for bracket attachment 12,16) .…”

Section: Introductionmentioning

confidence: 99%

Inadequate shear bond strengths of self-etch, self-adhesive systems for secure orthodontic bonding

et al. 2012

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This study evaluated the shear bond strength (SBS) of a traditional orthodontic bracket bonding agent (Transbond XT) against two self-etch, self-adhesive systems (Maxcem Elite and Vertise Flow). Sixty premolar teeth and sixty brackets were randomly and equally divided into five groups: Transbond XT (TXT) as the control, Maxcem Elite (ME) without etching, ME with etching (ME/ Etch), Vertise Flow (VF) without etching, and VF with etching (VF/Etch). Respective SBS results of the five groups were 9.86±3.20, 4.67±2.94, 7.82±2.56, 2.55±0.77, and 7.89±1.17 MPa. SBS values of the new self-etch adhesive systems were significantly lower than the traditional etch-and-rinse control (p<0.005). However, no significant differences were found between TXT and the self-adhesives applied with etching (p>0.005). After debonding, ARI scores "0" and "1" were predominant in non-etched ME and VF groups. It was concluded that new self-etch, self-adhesive bonding systems require additional phosphoric acid application to achieve comparable SBS values as the traditional orthodontic bonding agent.

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Comparative in vitro study of the shear bond strength of brackets bonded with restorative and orthodontic resins

Cited by 6 publications

References 16 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

Evaluation of an alternative technique to optimize direct bonding of orthodontic brackets to temporary crowns

Inadequate shear bond strengths of self-etch, self-adhesive systems for secure orthodontic bonding

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