Influence of radiopaque fillers on physicochemical properties of a model epoxy resin-based root canal sealer

Collares, Fabrício Mezzomo; Klein, Mariana; Santos, Paula Dapper; Portella, Fernando Freitas; Ogliari, Fabrício Aulo; Leitune, Vicente Castelo Branco; Samuel, Susana Maria Werner

doi:10.1590/1679-775720130334

Cited by 27 publications

(22 citation statements)

References 26 publications

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“…Although Transbond XT has a high filler concentration (77 wt%), it showed SBS values of 6.9 MPa adequate for clinical use. Previous studies showed that the filler concentration may clinically influence the viscosity of bonding materials 21 , but the higher viscosity can not limit the free flow of the resin into the enamel pores and the formation of resin tags 22 . Other studies showed that flowable resins can flow easily into an etched enamel structure adequately and onto a bracket base without need of an intermediate bonding resin, thus an enhance in the level of mechanical properties are expected 13 .…”

Section: Discussionmentioning

confidence: 99%

Influence of adhesive and bonding material on the bond strength of bracket to bovine tooth

Oliveira¹,

Costa²,

Correr³

et al. 2017

Braz. J. Oral Sci.

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Aim: To evaluate, in vitro, the effect of adhesive and bonding materials on the shear bond strength (SBS) of metallic brackets bonded to bovine teeth. Methods: Bovine teeth were embedded with acrylic resin, etched with 35% phosphoric acid for 20 s, rinsed, dried for 20 s and divided into 8 groups (n=20), according to the bonding materials and adhesive: Groups 1 and 5 -Transbond XT; Groups 2 and 6 -Fill Magic; Groups 3 and 7 -Biofix; and, Groups 4 and 8 -Orthocem. One layer of adhesive 3 M Unitek (Group 1), and one layer of Single Bond Universal Adhesive (Groups 2, 3 and 4) were applied and light-cured with LED for 10 s. Brackets were bonded to the buccal surface with four bonding materials and light-cured with LED for 40 s. SBS was carried out after 24 h and thermocycling (7,000 cycles -5°/55 °C). Data were submitted to two way ANOVA and Tukey's post hoc test (α=0.05). The Adhesive Remaining Index (ARI) was evaluated at 8×. Results: The adhesive was effective in increasing the SBS for all bonding materials (p<0.05). Significant difference (p<0.05) on the SBS was observed between bonding materials with or without adhesive. The ARI showed a predominance of scores 0 for all groups. Conclusions: The adhesive improved significantly the SBS of the brackets to teeth. Different SBS values occurred among the bonding materials. ARI index showed predominance of score 0 for all groups.

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Section: Discussionmentioning

confidence: 99%

Influence of adhesive and bonding material on the bond strength of bracket to bovine tooth

Oliveira¹,

Costa²,

Correr³

et al. 2017

Braz. J. Oral Sci.

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“…To eliminate the use of glasses, one solution is to use heavy-atom compound as homogeneous filler in matrix 15) . Ytterbium trifluoride (YbF3) 11) , barium sulphate (BaSO4), calcium tungstate (CaWO4) 16) and niobium pentoxide (Nb2O5) 8,10) have been used. However, the incorporation of the inorganic filler needs to be in low concentrations in order to not compromise the wetting of the dental substrate due to high viscosity of the resin while it is possible to increase the radiopacity and mechanical properties of the material 14) .…”

Section: Introductionmentioning

confidence: 99%

Tantalum oxide as filler for dental adhesive resin

et al. 2018

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The purpose of this study was to formulate and evaluate an adhesive resin with tantalum oxide. Ta2O5 was evaluated by scanning electron microscopy and laser diffraction. The adhesive was formulated with methacrylate monomers and photoinitiators. Ta2O5 was added into the adhesive at 1, 2, 5 and 10 wt%. One group remained without filler (control group). Ta2O5 distribution, radiopacity (n=5), degree of conversion (DC) (n=3), softening in solvent (n=5) and ultimate tensile strength (UTS) (n=10) were evaluated. Data were analyzed by one-way ANOVA and Tukey's test (α=0.05). Spherical nanometric Ta2O5 was arranged in 3.35 µm particles. The groups over 5 wt% presented higher radiopacity (p<0.05). The DC ranged from 61.78 (±1.19)% to 67.35 (±1.40)%, with statistical difference from control group over 5 wt% addition (p<0.05). There was no difference in softening in solvent (p>0.05) and UTS (p>0.05). Tantalum oxide is a promising alternative for adhesive formulation and it could be further tested for biomimetic remineralization.

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“…Furthermore, in the field of dental materials is required to develop new materials and explain the mechanisms involved in the phenomena. 46 …”

Section: Discussionmentioning

confidence: 99%

Orthodontic bracket bonding without previous adhesive priming: A meta-regression analysis

Altmann

Degrazia

Celeste

et al. 2015

The Angle Orthodontist

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Objective: To determine the consensus among studies that adhesive resin application improves the bond strength of orthodontic brackets and the association of methodological variables on the influence of bond strength outcome. Materials and Methods: In vitro studies were selected to answer whether adhesive resin application increases the immediate shear bond strength of metal orthodontic brackets bonded with a photo-cured orthodontic adhesive. Studies included were those comparing a group having adhesive resin to a group without adhesive resin with the primary outcome measurement shear bond strength in MPa. A systematic electronic search was performed in PubMed and Scopus databases. Results: Nine studies were included in the analysis. Based on the pooled data and due to a high heterogeneity among studies (I 2 5 93.3), a meta-regression analysis was conducted. The analysis demonstrated that five experimental conditions explained 86.1% of heterogeneity and four of them had significantly affected in vitro shear bond testing. The shear bond strength of metal brackets was not significantly affected when bonded with adhesive resin, when compared to those without adhesive resin. Conclusions: The adhesive resin application can be set aside during metal bracket bonding to enamel regardless of the type of orthodontic adhesive used. (Angle Orthod. 2016;86:391-398.)

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Influence of radiopaque fillers on physicochemical properties of a model epoxy resin-based root canal sealer

Cited by 27 publications

References 26 publications

Influence of adhesive and bonding material on the bond strength of bracket to bovine tooth

Influence of adhesive and bonding material on the bond strength of bracket to bovine tooth

Tantalum oxide as filler for dental adhesive resin

Orthodontic bracket bonding without previous adhesive priming: A meta-regression analysis

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