Relative wear of flowable and highly filled composite

Clelland, Nancy L.; Pagnotto, Matthew P.; Kerby, Ronald E.; Seghi, Robert R.

doi:10.1016/j.prosdent.2004.11.006

Cited by 59 publications

(38 citation statements)

References 12 publications

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“…Studies reporting better resistance to attrition and abrasion with higher filler content have been based on comparisons of different products with differing formulations, 26 or have evaluated filler particles that were substantially smaller than those in the present study (0.04 m vs 5 m, respectively). 27 The present results suggest that filler content alone does not determine the wear resistance of a material; adding more filler particles to the existing resin matrix does not necessarily make the material more durable.…”

Section: Discussionmentioning

confidence: 86%

Does the amount of filler content in sealants used to prevent decalcification on smooth enamel surfaces really matter?

Bebber¹,

Campbell²,

Honeyman³

et al. 2011

The Angle Orthodontist

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Objective: To determine how filler content and an acidic environment affect the retention of sealants placed on smooth enamel surfaces. Materials and Methods: A sample of 120 teeth was randomly divided into six subsamples. Three experimental sealants with identical formulas, with the exception of the amount of filler content (18%, 30%, 50%), were applied according to manufacturers' recommendations. Half of the subsamples were exposed to an acid environment (pH of 2.5) for 96 hours. With the use of a toothbrushing simulator, each tooth was exposed to 15,000 brushing strokes, while a slurry of 1:3 toothpaste/neutral sodium bicarbonate cycled through the machine. Initial and final photographs were analyzed subjectively and objectively. Scanning electron microscope photomicrographs were used to evaluate the tooth surface. Results: Subjective analyses showed significant (P , .05) filler effects, with the 18% filled sealant showing the least change, followed by the 30% sealant, then the 50% filled sealant, which showed the greatest loss. Objective analyses showed the same pattern of loss, but the differences between sealants were not statistically significant. Exposure to an acidic environment had no significant effect on sealant retention. SEMS showed a layer of sealant remaining on all of the sealed teeth evaluated. Conclusions: Filler content of resin sealant material affects the retention of sealants on smooth enamel surfaces; exposure to an acid environment has no effect on sealant retention. Within the limits of this study, highly filled resin sealants once saturated have the ability to endure the oral environment and remain on a smooth enamel surface, regardless of the amount of filler content. (Angle Orthod. 2011;81:134-140.)

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Section: Discussionmentioning

confidence: 86%

Does the amount of filler content in sealants used to prevent decalcification on smooth enamel surfaces really matter?

Bebber¹,

Campbell²,

Honeyman³

et al. 2011

The Angle Orthodontist

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show abstract

“…One potential way to improve sealing would be to use lower viscosity flowable composites; however, these flowable composites are not generally considered as durable as higher viscosity materials, due to the lower levels of reinforcing filler particles present. 1 A second approach is to use a flowable liner in conjunction with regular composites. [2][3][4][5][6][7] A third alternative is to use conventional composites that have been heated to lower their viscosity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pre-heating Resin Composite on Restoration Microleakage

Wagner¹,

Aksu²,

Neme³

et al. 2008

Operative Dentistry

112

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©Operative Dentistry, 2008, 33-1, 72-78 SUMMARYImproving the adaptation of resin composites during placement is necessary to increase durability and reduce microleakage. Flowable resin liners have been introduced to improve adaptation in composite restorations. In addition, a device that lowers the viscosity of regular dental composites has been introduced (Calset, AdDent Inc, Danbury, CT, USA). This device lowers the viscosity of composites by preheating them to 54.4°C, which should lead to improved adaptation. This study compared microleakage in Class II composite restorations prepared using: 1) preheated resin composite, 2) unheated composite and 3) a flowable liner followed by unheated composite. Class II cavities were prepared on the mesial and distal surfaces of extracted third molars. Ten preparations were restored with resin composite (Esthet-X, Dentsply, York, PA, USA) for each of the following four techniques: Control (Esthet-X with Prime & Bond NT, Dentsply), Flowable (f) (as Control but used Esthet-X Flow liner), Preheated (p) (as Control but with preheating composite to 54.4°C) and Delay (d) (as Preheated but followed by a 15-second delay before curing). The teeth were restored, finished, stored in distilled water for 24 hours, then thermocycled between water bath temperatures of 5°C and 55°C with a one-minute dwell time for 1000 cycles. Tooth apices were sealed with epoxy and varnish was applied to within 1 mm of the restoration margins. The teeth were placed in 0.5% basic fuschin dye for 24 hours, rinsed, then embedded in self-curing resin. The embedded teeth were sectioned mesiodistally with a slow-speed diamond saw, providing multiple sections per restoration. Microleakage was rated by two evaluators using Clinical RelevanceThe results of this study indicate that preheating composites can improve adaptation of resin composites to tooth structure. This technique significantly reduced microleakage. However, delaying light curing of the preheated composite after placement appears to be counterproductive and diminishes the positive effects from the preheating treatment. Flowable liner was less effective than preheating the composite in reducing microleakage.

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“…Although BF resin presents a low viscosity and elevated fluidity with internal adaptation in dentine,26 these characteristics, by themselves, are not sufficient to promote a higher bond strength in repairs done with composite resins. Fluid resins have reduced mechanical and physical features compared to traditional hybrid resins27; this may represent a concern when the repair is in a high-tension area,28 suggesting indications for cracking 29…”

Section: Discussionmentioning

confidence: 99%

Shear bond strength of different surface treatments in bulk fill, microhybrid, and nanoparticle repair resins

Tavarez¹,

Júnior²,

Guará³

et al. 2017

CCIDE

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ObjectivesThe purpose of this study was to evaluate the influence of surface treatment and different types of composite resin on the microshear bond strength of repairs.Materials and methodsSeventy-two specimens (n=72) were prepared using a nanoparticle resin and stored in artificial saliva at 37 ± 1°C for 24 h. After this period, the specimens (n=24) were restored with microhybrid resin P60 (3M ESPE), nanoparticle resin Filtek Z350 (3M ESPE), and Bulk Fill Surefil SDR Flow (Dentsply) composite resins. Previously, the surfaces of the samples were treated, forming the following subgroups (n=12): (A) conditioned with 37% phosphoric acid for 30 s, and (B) abrasioned with a diamond tip for 3 s and conditioned with 37% phosphoric acid. In all groups, before insertion of the composite resin, the adhesive system Adper Single Bond 2 was actively applied and photopolymerized for 20 s.ResultsThe microshear test was executed to assess bond strength. Kruskal–Wallis (p<0.05) and Mann–Whitney statistical tests showed significant statistical difference considering that the bulk-fill resin turned out to have a lower bond strength than the conventional nanoparticle and microhybrid composites. With regard to the technique, the roughening with diamond bur followed by the application of phosphoric acid exhibited values higher than the exclusive use of acid.ConclusionThe microshear bond strength of the composite resin repairs varies in accordance with the type of composite resin utilized, and roughening the surface increased the bond strength of these materials.

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Relative wear of flowable and highly filled composite

Cited by 59 publications

References 12 publications

Does the amount of filler content in sealants used to prevent decalcification on smooth enamel surfaces really matter?

Does the amount of filler content in sealants used to prevent decalcification on smooth enamel surfaces really matter?

Effect of Pre-heating Resin Composite on Restoration Microleakage

Shear bond strength of different surface treatments in bulk fill, microhybrid, and nanoparticle repair resins

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