Zirconia nanoparticles prepared by laser vaporization as fillers for dental adhesives

Lohbauer, Ulrich; Wagner, Andrea; Belli, Renan; Stoetzel, Christian; Hilpert, Andrea; Kurland, Heinz-Dieter; Grabow, Janet; Müller, Frank A.

doi:10.1016/j.actbio.2010.07.002

Cited by 89 publications

(71 citation statements)

References 32 publications

(49 reference statements)

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“…If both systems have similar dispersions, an increase in the nanoparticle percentage would mean a higher interfacial area between the polymer and nanofiller due to the larger number of particles in the system. This would lead to more satisfactory dissipation of stresses and better mechanical properties, 24,25 contrary to what was observed in the mechanical tests.…”

Section: Discussioncontrasting

confidence: 49%

“…This behavior is similar to that observed in other nanofillers. 10,24,25 The change in mechanical properties can be related to the dispersal of the nanoclays in the system, as supported by the XRD results. The mechanical properties of the systems with 0.2% clay concentration, due to their possibly exfoliated configuration, changed more than in the other systems, particularly the elastic modulus, a parameter which many authors consider an indirect way to measure these fillers' exfoliation.…”

Section: Discussionmentioning

confidence: 56%

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The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

Menezes

Silva

2016

Mat. Res.

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The aim of this study was to obtaining an adhesive made of dimethacrylate copolymer and clay particles in different concentrations. The samples were prepared by light curing and were evaluated by XRD, FTIR and TGA as well as by measuring flexural strength, elasticity modulus and tensile resistance. The XRD and the mechanical test results indicated that the system with 0.2% clay is exfoliated, while the highest concentrations showed the agglomeration of these clays. FTIR was used to determine the conversion, and showed that use of clays particles are unable to significantly alter the polymerization until 1.0%. However, for the group containing 1.5%, there was a decline in this index. In the thermogravimetric analysis, only the groups with 0.2% of clays showed increased thermal resistance. In conclusion, the incorporation of clay at 0.2% concentration produces a well-dispersed system and can be applied as a dental adhesive.

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Section: Discussioncontrasting

confidence: 49%

Section: Discussionmentioning

confidence: 56%

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

Menezes

Silva

2016

Mat. Res.

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“…Various load particles have been added to dental adhesives to strengthen the link of bond strength to the dental structure, diminishing polymerization shrinking and increasing the modulus of elasticity of the adhesive layer [12]. Recently, load nanoparticles [13][14][15][16], especially nanoparticles of ceramic materials [15,16], have been used in the formulation of composites, with the purpose of improving physical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Evaluation of Bond Strength of Dental Polymer Systems Modified with Hydroxyapatite Nanoparticles

Dumont¹,

Menezes-Silva²,

Almeida-Júnior³

et al. 2013

MSCE

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The study Modifies an adhesive system with hydroxyapatite nanoparticles as load, characterizes it and evaluates the effectiveness of its bond to dental structure. The middle thirds of healthy premolar tooth crowns were obtained, and each crown was sectioned vertically, resulting in two sections. The sections were divided into ten groups (n = 15), in which resin composite restorations were simulated: (G1E and G1D) conventional adhesive system (SAC); (G2E and G2D) SAC modified with HAP; (G3E and G3D) Primer modified with HAP; (G4E and G4D) monocomponent adhesive system; (G5E and G5D) self-etching adhesive system. The specimens were submitted to the microshear test and characterization technique. There was statistically significant difference (Kruskal-Wallis) between the groups (p < 0.01). G3 presented the highest bond strength to enamel (64.40 MPa, ±7.36) and dentin (39.59 MPa, ±21.46). The majority of specimens were found adhesive fractures. Bond strength to enamel and dentin of the primer modified with HAP of SAC showed higher values.

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“…Nanoparticles as antimicrobials agents in endodontics have been increased in last 5 years 26) . Early reports show adhesives and composites supplemented with nanoparticles to provide bactericidal and remineralizing properties 27,28) . 32,33) .…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial and antibiofilm activities of MTA supplemented with bismuth lipophilic nanoparticles

et al. 2017

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The objective of this work was to determine the antimicrobial and antibiofilm properties of mineral trioxide aggregate (MTA) supplemented with bismuth lipophilic nanoparticles (BisBAL NPs). The antimicrobial activity of the composite MTA-BisBAL NPs was determined by the disk diffusion assay, while antibiofilm activity was analyzed by fluorescence microscopy. The cytotoxicity of MTA-BisBAL NPs was determined on human gingival fibroblasts by optical microscopy and crystal violet staining. MTA-BisBAL NPs inhibited the growth of Enterococcus faecalis, Escherichia coli, and Candida albicans and also detached the biofilm of fluorescent E. faecalis after 24 h of treatment. The addition of BisBAL nanoparticles did not significantly modify the physical properties of MTA, and cytotoxicity was not observed when MTA-BisBAL NPs was added on human gingival fibroblasts. Altogether these results suggest that BisBAL nanoparticles provide antimicrobial and antibiofilm activities to MTA while it retained their biophysical properties without cause side effects on human gingival fibroblasts.

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Zirconia nanoparticles prepared by laser vaporization as fillers for dental adhesives

Cited by 89 publications

References 32 publications

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

Characterization and Evaluation of Bond Strength of Dental Polymer Systems Modified with Hydroxyapatite Nanoparticles

Antimicrobial and antibiofilm activities of MTA supplemented with bismuth lipophilic nanoparticles

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