Investigations towards nano-hybrid resin-based composites

Ilie, Nicoleta; Rencz, Adam; Hickel, Reinhard

doi:10.1007/s00784-012-0689-1

Cited by 79 publications

(54 citation statements)

References 18 publications

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“…8 They contain monomers like Bis-GMA, UDMA, TEGDMA, and EBPDMA in their organic matrix as well as regular filler systems (Table 1). In SureFil SDR flow, the organic matrix also contains a patent-registered urethane dimethacrylate with incorporated photoactive groups able to control polymerization kinetics 5 …”

Section: Discussionmentioning

confidence: 99%

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Bulk-fill Resin-based Composites: An In Vitro Assessment of Their Mechanical Performance

Ilie

Bucuta

Draenert

2013

Operative Dentistry

415

334

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SUMMARY The study aimed to assess the mechanical performance of seven bulk-fill RBCs (Venus Bulk Fill, Heraeus Kulzer; SureFil SDR flow, Dentsply Caulk; x-tra base and x-tra fil, VOCO; Filtek Bulk Fill, 3M ESPE; SonicFill, Kerr; Tetric EvoCeram Bulk Fill, Ivoclar Vivadent) by determining their flexural strength (σ), reliability (Weibull parameter, m), flexural modulus (Eflexural), indentation modulus (YHU), Vickers hardness (HV), and creep (Cr). The significant highest flexural strengths were measured for SonicFill, x-tra base, and x-tra fil, while x-tra base, SureFil SDR flow, and Venus Bulk Fill showed the best reliability. The differences among the materials became more evident in terms of Eflexural and YHU, with x-tra fil achieving the highest values, while Filtek Bulk Fill and Venus Bulk Fill achieved the lowest. The enlarged depth of cure in bulk-fill RBCs seems to have been realized by enhancing the materials' translucency through decreasing the filler amount and increasing the filler size. The manufacturer's recommendation to finish a bulk-fill RBC restoration by adding a capping layer made of regular RBCs is an imperative necessity, since the modulus of elasticity and hardness of certain materials (SureFil SDR flow, Venus Bulk Fill, and Filtek Bulk Fill) were considerably below the mean values measured in regular nanohybrid and microhybrid RBCs. The class of bulk-fill RBCs revealed similar flexural strength values as the class of nanohybrid and microhybrid RBCs, and significantly higher values when compared to flowable RBCs. The modulus of elasticity (Eflexural), the indentation modulus (YHU), and the Vickers hardness (HV) classify the bulk-fill RBCs as between the hybrid RBCs and the flowable RBCs; in terms of creep, bulk-fill and the flowable RBCs perform similarly, both showing a significantly lower creep resistance when compared to the nanohybrid and microhybrid RBCs.

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Section: Discussionmentioning

confidence: 99%

“…The aim of this study was, therefore, to assess the mechanical performance of a new material classthe bulk-fill RBCs-at the macro and micro scale, and to compare its performance with an already published material database 8 …”

Section: Introductionmentioning

confidence: 99%

Bulk-fill Resin-based Composites: An In Vitro Assessment of Their Mechanical Performance

Ilie

Bucuta

Draenert

2013

Operative Dentistry

415

334

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“…The properties of resin composites can be defined by the characteristics of the organic matrix network, 1,2 the reinforcing phase 3,4,5,6,7,8,9,10,11 and the silane interphase, responsible for chemically bonding the organic and inorganic phases. 12,13,14,15,16,17 The silane interphase is most commonly composed of the 3-MPTS (γ-3-methacryloxypropyltrimethoxysilane) monomer, a bifunctional molecule capable of both polymerizing with the organic resin matrix and establishing a covalent oxane bond (Si-O-Si) with the surface of the filler particles.…”

Section: Introductionmentioning

confidence: 99%

“…3,4,5,6,7,8,11 In addition to the volumetric filler fraction and particle shape, aspects such as particle size distribution help define the behavior of the material. 4,5,6,7 Variations in the particle size may affect the absorption of the energy generated during mechanical loading, and, therefore, influence the mechanical properties of the composite. 8,11 Nonetheless, there are a small number of studies analyzing the influence of the overall inorganic phase particle size distribution on the chemicalmechanical properties of dental composites, mainly those similar to commercial materials.…”

Section: Introductionmentioning

confidence: 99%

Influence of silane content and filler distribution on chemical-mechanical properties of resin composites

et al. 2015

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This study investigated the influence of silane concentration and filler size distribution on the chemical-mechanical properties of experimental composites. Experimental composites with silane contents of 0%, 1% and 3% (in relation to filler mass) and composites with mixtures of barium glass particles (median size = 0.4, 1 and 2 μm) and nanometric silica were prepared for silane and filler analyses, respectively. The degree of conversion (DC) was analyzed by FTIR. Biaxial flexural strength (BFS) was tested after 24-h or 90-d storage in water, and fracture toughness, after 24 h. The data were subjected to ANOVA and Tukey's test (p = 0.05). The DC was not significantly affected by the silane content or filler distribution. The 0% silane group had the lowest immediate BFS, and the 90-d storage time reduced the strength of the 0% and 3% groups. BFS was not affected by filler distribution, and aging decreased the BFS of all the groups. Silanization increased the fracture toughness of both the 1% and 3% groups, similarly. Significantly higher fracture toughness was observed for mixtures with 2 μm glass particles. Based on the results, 3% silane content boosted the initial strength, but was more prone to degradation after water storage. Variations in the filler distribution did not affect BFS, but fracture toughness was significantly improved by increasing the filler size.

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“…18,19. The most important reason for choosing a nano-hybrid composite is the excellent aesthetic properties of this material that is very important especially when restoring anterior teeth. 18 In our case report, after six-month follow-up, the patient was very satisfied with the image of his teeth, which still preserve the natural tooth like appearance with an acceptable clinical performance.…”

Section: Discussionmentioning

confidence: 58%

Direct Resin Composite Laminate Veneer Restorations of Severely Discolored and Fractured Maxillary Non-Vital Central Incisors: A Case Report

KAZAK¹,

GÜNAL²

2016

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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The purpose of this case report was to restore severely discolored and fractured non-vital maxillary central incisors with direct resin composite laminate veneers and to discuss the short-term follow-up. A 17 years old male patient presented to Istanbul Aydın University Faculty of Dentistry because of aesthetic reasons. After radiographic and clinical examination, severe discoloration and fracture of maxillary central incisors were diagnosed. First of all, endodontic retreatment and internal bleaching were performed. Then the teeth were prepared for resin composite laminate veneer restorations. The teeth were etched with 37% phosphoric acid, restored with an adhesive system and a nano-hybrid composite. Finishing and polishing procedures were performed immediately. As a result of the six-month control, the patient was very satisfied with the image of his teeth that still preserve the natural tooth like appearance. Direct resin composite laminate veneer is a costeffective treatment option to restore anterior teeth aesthetically. This treatment procedure is useful for the growing patients before any definite restoration planning.

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Investigations towards nano-hybrid resin-based composites

Cited by 79 publications

References 18 publications

Bulk-fill Resin-based Composites: An In Vitro Assessment of Their Mechanical Performance

Bulk-fill Resin-based Composites: An In Vitro Assessment of Their Mechanical Performance

Influence of silane content and filler distribution on chemical-mechanical properties of resin composites

Direct Resin Composite Laminate Veneer Restorations of Severely Discolored and Fractured Maxillary Non-Vital Central Incisors: A Case Report

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