Effects of surface treatment, hydration and application method on the bond strength of a silorane adhesive and resin system to dentine

Pucci, César Rogério; Oliveira, Rodrigo Silva de; Caneppele, Taciana Marco Ferraz; Torres, C.R.G.; Borges, Alessandra Bühler; Tay, Franklin R.

doi:10.1016/j.jdent.2012.11.016

Cited by 19 publications

(12 citation statements)

References 30 publications

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“…A low energy level of Er:YAG laser (60 mJ) was used in this study for previous conditioning of the enamel as described25,26 because it has been proposed that low energy levels (60–80 mJ) are capable of promoting demineralization without causing severe changes in enamel 25. A reduction of bond strength was observed, as has been pointed out in studies,25 in which different adhesive systems have been used, and the laser with the same parameters as those used in this study.…”

Section: Discussionmentioning

confidence: 99%

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: Discussionmentioning

confidence: 99%

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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“…As a consequence, the adhesive interface may be considered the weak link of the adhesive system 12 with reduced bond strength. Also, it has been speculated that the silorane-based primer may be considered a one-step adhesive system, as the primer is light cured 21 . This may justify the low bond strength values of silorane-based primer compared to the two-step adhesive system.…”

Section: Discussionmentioning

confidence: 99%

“…This may justify the low bond strength values of silorane-based primer compared to the two-step adhesive system. It is known that one-step adhesives are more hydrophilic 16 and have inferior performance regarding bond strength 21 .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of bond strength of silorane and methacrylate based restorative systems to dentin using different cavity models

et al. 2013

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ObjectiveThe aim of this in vitro study was to evaluate the microtensile bond strength (µTBS) to dentin of two different restorative systems: silorane-based (P90), and methacrylate-based (P60), using two cavity models.Material and MethodsOcclusal enamel of 40 human third molars was removed to expose flat dentin surface. Class I cavities with 4 mm mesial-distal width, 3 mm buccal-lingual width and 3 mm depth (C-factor=4.5) were prepared in 20 teeth, which were divided into two groups (n=10) restored with P60 and P90, bulk-filled after dentin treatment according to manufacturer's instructions. Flat buccal dentin surfaces were prepared in the 20 remaining teeth (C-factor=0.2) and restored with resin blocks measuring 4x3x3 mm using the two restorative systems (n=10). The teeth were sectioned into samples with area between 0.85 and 1.25 mm2 that were submitted to µTBS testing, using a universal testing machine (EMIC) at speed of 0.5 mm/min. Fractured specimens were analyzed under stereomicroscope and categorized according to fracture pattern. Data were analyzed using ANOVA and Tukey Kramer tests.ResultsFor flat surfaces, P60 obtained higher bond strength values compared with P90. However, for Class I cavities, P60 showed significant reduction in bond strength (p<0.05). No statistical difference between restorative systems was shown for Class I cavity model (p>0.05), or between Class I Cavity and Flat Surface group, considering P90 restorative system (p>0.05). Regarding fracture pattern, there was no statistical difference among groups (p=0.0713) and 56.3% of the fractures were adhesive.ConclusionIt was concluded that methacrylate-based composite µTBS was influenced by cavity models, and the use of silorane-based composite led to similar bond strength values compared to the methacrylate-based composite in cavities with high C-factor.

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“…The specimens were then thermocycled in distilled water at temperatures of 5 °C and 55 °C for 3000 cycles, with a dwell time of 20 s in each water bath to simulate in vitro thermal changes that occur in the oral cavity [24]. After the thermocycling, a three-point bending test with a universal testing machine (ElectroPulsTM E3000, Instron, Norwood, MA, USA) determined the flexural strength of each specimen.…”

Section: Methodsmentioning

confidence: 99%

Effect of Heat Treatment on the Physical Properties of Provisional Crowns during Polymerization: An in Vitro Study

Mei

et al. 2015

Materials

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This study concerned the effect of heat treatment during setting on the physical properties of four resin-based provisional restorative materials: Duralay (polymethyl methacrylate), Trim II (polyethyl methacrylate), Luxatemp (bis-acrylic composite), and Protemp 4 (bis-acrylic composite). Specimens were prepared at 23, 37, or 60 °C for evaluation of flexural strength, surface roughness, color change and marginal discrepancy. Flexural strength was determined by a three-point bending test. Surface profile was studied using atomic force microscopy. Color change was evaluated by comparing the color of the materials before and after placement in coffee. A travelling microscope helped prepare standardized crowns for assessment of marginal discrepancy. Flexural strength of all tested materials cured at 23 °C or 37 °C did not significantly change. The surface roughness and marginal discrepancy of the materials increased at 60 °C curing temperature. Marginal discrepancies, color stability, and other physical properties of materials cured at 23 °C or 37 °C did not significantly change. Flexural strength of certain provisional materials cured at 60 °C increased, but there was also an increase in surface roughness and marginal discrepancy.

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Effects of surface treatment, hydration and application method on the bond strength of a silorane adhesive and resin system to dentine

Cited by 19 publications

References 30 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

Evaluation of bond strength of silorane and methacrylate based restorative systems to dentin using different cavity models

Effect of Heat Treatment on the Physical Properties of Provisional Crowns during Polymerization: An in Vitro Study

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