Radiopaque dental adhesives: Dispersion of flame-made Ta2O5/SiO2 nanoparticles in methacrylic matrices

Schulz, H.; Schimmoeller, Bjoern; Pratsinis, Sotiris E.; Salz, Ulrich; Bock, Thorsten

doi:10.1016/j.jdent.2008.04.010

Cited by 70 publications

(47 citation statements)

References 49 publications

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“…The incorporation of inorganic fillers into polymers may enhance adhesives' mechanical properties and improve the clinical practice 5,[7][8][9][10][11] . It decreases the composite's organic phase and the adhesives may be more hydrolytic stable, as the water sorption occurs mainly in the organic matrix 29) .…”

Section: Discussionmentioning

confidence: 99%

“…Many modifications have been proposed in the adhesive resins to contribute to the longevity of the restorative treatments [4][5][6] . A current trend involves the incorporation of inorganic fillers to decrease the relative amount of organic phase, providing a higher hydrolytic stability to resin and a reliable cavity seal [7][8][9][10][11][12] . Besides physical and chemical properties, the addition of inorganic fillers may increase the radiopacity.…”

Section: Introductionmentioning

confidence: 99%

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Tantalum oxide as filler for dental adhesive resin

García

Leitune

Ferreira

et al. 2018

Dental Materials Journal

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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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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tantalum oxide as filler for dental adhesive resin

García

Leitune

Ferreira

et al. 2018

Dental Materials Journal

View full text Add to dashboard Cite

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“…Different types of filler have been incorporated to adhesive systems, such as SiO 2 [5], Ta 2 O 5 [6] and Nb 2 O 5 [7] to increase its mechanical properties. However, few studies evaluated addition of apatite fillers at adhesive resin properties.…”

Section: Introductionmentioning

confidence: 99%

Interface evaluation of experimental dental adhesives with nanostructured hydroxyapatite incorporation

et al. 2014

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The aim of this study was to evaluate the adhesive interface with dentin of an experimental adhesive resin with nanostructured hydroxyapatite addition. The organic phase of the adhesive resin was produced by mixing 50 wt.% Bis-GMA, 25 wt.% TEGDMA and 25 wt.% HEMA. CQ and EDAB were added at 1 mol% to all groups, according to the monomer moles. HA nano was added at the following two concentrations: 0 and 2 wt%. One commercial adhesive system was used as control. Nine lower incisor bovine teeth were used to produce interfaces of adhesive resin and dentin. Tooth slices were analysed using the following micro-Raman parameters: a 100 mW diode laser with 785 nm wavelength and spectral resolution of~3-5 cm -1 . One-dimensional mapping was performed over a 150 μm line across the adhesive-dentine interface at 1 μm intervals using a computerized XYZ stage. These areas covered the composite resin, adhesive layer, hybrid layer, partially demineralised and un-affected dentine and were visualised and focused at x500 magnification. Raman analysis showed the penetration of experimental and commercial adhesive systems into dentin. HA nano was observed into the hybrid layer. Based on results of the present study, is possible to observe resin and nanostructured hydroxyapatite penetration at the hybrid layer.

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“…For commercially available dental cements of low radiopacity 6,18,22) , they will show up as a separate layer 7) especially if the radiopacity is lower than that of dentin and the restorative material.…”

mentioning

confidence: 99%

Influence of inorganic filler content on the radiopacity of dental resin cements

et al. 2012

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Digital radiography was used to measure the radiopacity of 18 resin cements to determine the influence of inorganic filler content on radiopacity. Four disk specimens (n=4) of each light-curing cement were digitally radiographed alongside an aluminum step wedge using an intraoral sensor (XIOS Plus, Sirona, Germany), and their mean gray value measured. Percentage of filler by weight was determined using an analytical combustion furnace. Data were statistically analyzed using one-way ANOVA and Tukey's test (=0.05). All materials were more radiopaque than dentin and 12 materials were more radiopaque than enamel. Filler percentage ranged between 17.36 to 53.56 vol% and radiopacity between 1.02 to 3.40 mm Al. There were no statistically significant differences in inorganic filler percentage and radiopacity among the different shades of the same material (p>0.05), but the highest radiopacity was measured for the material which contained a higher percentage of filler.

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Radiopaque dental adhesives: Dispersion of flame-made Ta2O5/SiO2 nanoparticles in methacrylic matrices

Cited by 70 publications

References 49 publications

Tantalum oxide as filler for dental adhesive resin

Tantalum oxide as filler for dental adhesive resin

Interface evaluation of experimental dental adhesives with nanostructured hydroxyapatite incorporation

Influence of inorganic filler content on the radiopacity of dental resin cements

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