Orthodontics: Bracket Materials, Adhesives Systems, and Their Bond Strength

Scribante, Andrea; Contreras‐Bulnes, Rosalía; Montasser, Mona A.; Vallittu, Pekka K.

doi:10.1155/2016/1329814

Cited by 62 publications

(74 citation statements)

References 16 publications

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“…The group treated with Er:YAG laser/XT (7.4 MPa) showed the lowest bond strength values, and these findings do not differ from those of studies that observed the bond strength 24 hours after bracket bonding to enamel previously treated with Er:YAG laser 6. However, it is reported in the literature19 that the variation between 5 and 50 MPa indicates the ideal values of bond strength, contributing to the findings of the present study.…”

Section: Discussionsupporting

confidence: 66%

Er:YAG pre-treatment for bonding of orthodontic bracket: 1 year of in vitro treatment

Tavarez¹,

Bezerra²,

Penha³

et al. 2017

CCIDE

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ObjectiveThe aim of this study was to evaluate in vitro bond strength of metal brackets bonded with: total etch, total etch with erbium: yttrium aluminum garnet laser (Er:YAG) and self-etching adhesive systems, submitted to thermal-mechanical cycling, simulating 1 year of orthodontic treatment.Materials and methodsFor the study, 80 bovine incisors were randomly divided into 3 experimental groups (n=16 each): XT- acid etching + Transbond XT, XT/Er:YAG- Transbond XT associated with Er:YAG laser irradiation (λ=2.94 μm, 60 mJ, 10 Hz) and SEP- Transbond Plus Self Etching Primer. Samples were submitted to thermal-mechanical cycling, simulating 1 year of orthodontic treatment. Afterward, the shear bond strength test was performed in a universal test machine at a speed of 0.5mm/min. Samples were evaluated under a stereomicroscope and by scanning electron microscopy for analysis of enamel surface and adhesive remnant index. Data were analyzed using Kruskal–Wallis and Mann–Whitney (with Bonferroni correction) statistical tests.ResultsStatistically significant difference was observed between the groups studied (p<0.05). Groups XT and SEP showed the highest bond strength values, without statistical difference between them, while group XT/Er:YAG showed reduction in bond strength values. Higher frequency of adhesive failures between enamel and adhesive system was verified for groups XT and XT/Er:YAG.ConclusionThe conventional (XT) and self-etching (SEP) adhesive systems showed mean bond strength values, similar between them, whereas the previous application of Er:YAG laser promoted the lowest bond strength values.

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Section: Discussionsupporting

confidence: 66%

Er:YAG pre-treatment for bonding of orthodontic bracket: 1 year of in vitro treatment

Tavarez¹,

Bezerra²,

Penha³

et al. 2017

CCIDE

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“…The values obtained are ideal since they indicate a good adhesion of the tested materials to teeth, and at the same time, a facilitated enamel finishing after debonding. Moreover, bonding strength values are included in the interval of 5-50 MPa, which is considered a valid range for materials to support masticatory forces [44]. In sight of these results obtained in vitro, both adhesives appear reliable, although a significantly major shear force is assessed for the conventional resin.…”

Section: Discussionmentioning

confidence: 99%

Fear of the Relapse: Effect of Composite Type on Adhesion Efficacy of Upper and Lower Orthodontic Fixed Retainers: In Vitro Investigation and Randomized Clinical Trial

et al. 2020

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The aim of this laboratory and clinical study is to determine the reliability of the flowable nanocomposite Filtek Supreme XTE (FL) for the adhesion of orthodontic retainers, compared to highly filled orthodontic resin Transbond XT (XT). Portions of a round section multistranded wire (Ortosmail Krugg) were bonded to 40 bovine incisors with Scotchbond Universal in total-etch modality. For group one (XT, 20 samples), the orthodontic resin was used, whereas in group two (FL, 20 samples), the flowable one. Specimens were placed into a universal testing machine which applied a shear force on retainers with a crosshead speed of one/minute. Shear bond strength (SBS) and adhesive remnant index (ARI) scores were calculated. In the clinical trial, 100 patients requiring a canine-to-canine palatal and lingual retainer were randomly divided into two groups, according to the resin used for bonding procedure: the orthodontic in group one (XT, 50 participants) and the flowable in group two (FL, 50 participants). Monthly visits were carried out over a 24-month follow up to assess any detachment occurring on teeth of both arches. All data were submitted to statistical analysis. In vitro, FL reported a significant lower mean SBS, whereas no significant differences in ARI were reported between the two groups which both showed a major frequency of scores "1" and "2". At the end of the 24-month follow up, FL reported significantly higher failure rates in both arches besides a significantly lower survival rate starting from the sixth month after retainers bonding. According to the results assessed in vitro and clinically, XT would be preferable to FL when performing retainers bonding procedure.

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“…For the selection, the following inclusion criteria were followed: integrity of the buccal and lingual surfaces, absence of enamel wear, absence of caries, absence of volume, shape and structure anomalies, and absence of traumatic lesions [10]. e teeth were stored in thymol (0.1% weight/volume) [13].…”

Section: Adhesion Testmentioning

confidence: 99%

“…Each appliance was stressed vertically (with an occluso-gingival direction and a speed of the crosshead set at 1 mm/min) [15]. e load required to detach the brackets was measured in newton and then converted into megapascal (MPa) [13].…”

Section: Adhesion Testmentioning

confidence: 99%

Biomimetic Effect of Nano-Hydroxyapatite in Demineralized Enamel before Orthodontic Bonding of Brackets and Attachments: Visual, Adhesion Strength, and Hardness in In Vitro Tests

Scribante

Farahani

Marino

et al. 2020

BioMed Research International

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Dietary habits with high consumption of acidic food can induce in orthodontic patients an increased risk of demineralization lesions around orthodontic brackets and bands. The purpose of the present laboratory study is to assess the in vitro visual efficacy of a biomimetic nano-hydroxyapatite remineralizing solution in a hypomineralized enamel surface and its effect on adhesion of fixed orthodontic appliances and on enamel microhardness. Intact teeth were demineralized, and subsequently the areas of demineralization were visually recorded using a 0–100 scale. Subsequently, a remineralizing solution (Biorepair® Repair Shock Treatment) was applied for ten minutes once a day/for one week per month for a total remineralizing treatment of 3 months. Visual effects were recorded. Moreover, bond strength was recorded and adhesive remnant index scores were measured for both orthodontic brackets and composite attachments both before demineralization and after demineralization and application of remineralizing solution. Also, Vickers microhardness was measured. All data were submitted to statistical analysis. The application of remineralizing solution induced a significant in vitro reduction of demineralized areas after the first week of application. No significant differences between untreated enamel surfaces and remineralized surfaces were detected after 2 months of remineralizing treatment. Bond strength values were significantly reduced for both brackets and attachments after remineralizing treatment. However, attachments showed higher adhesion values than brackets in both conditions tested. Remineralized enamel showed significantly higher microhardness values than demineralized enamel and lower values than intact enamel.

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Orthodontics: Bracket Materials, Adhesives Systems, and Their Bond Strength

Cited by 62 publications

References 16 publications

Er:YAG pre-treatment for bonding of orthodontic bracket: 1 year of in vitro treatment

Er:YAG pre-treatment for bonding of orthodontic bracket: 1 year of in vitro treatment

Fear of the Relapse: Effect of Composite Type on Adhesion Efficacy of Upper and Lower Orthodontic Fixed Retainers: In Vitro Investigation and Randomized Clinical Trial

Biomimetic Effect of Nano-Hydroxyapatite in Demineralized Enamel before Orthodontic Bonding of Brackets and Attachments: Visual, Adhesion Strength, and Hardness in In Vitro Tests

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