Fatigue behavior of resin composites in aqueous environments

Takeshige, Fumio; Kawakami, Yutaka; Hayashi, Mikako; Ebisu, Shigeyuki

doi:10.1016/j.dental.2006.06.031

Cited by 65 publications

(52 citation statements)

References 14 publications

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“…Repeated temperature changes may induce degradation of the matrix-filler bonds due to differences in the thermal expansion coefficients of the filler and the resin matrix 35) . The mechanical properties of composites may also be negatively affected by swelling of the organic matrix or hydrolysis of the filler-matrix interfaces 37,38) . Yiu et al 39) theorized that hydrolytic degradation of resin polymers may occur due to microcracks formed through repeated cycles of sorption and desorption 39) , which could in turn contribute to increases in surface roughness 40) .…”

Section: Discussionmentioning

confidence: 99%

The effect of surface sealant application and accelerated aging on posterior restorative surfaces: An SEM and AFM study

et al. 2017

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Section: Discussionmentioning

confidence: 99%

The effect of surface sealant application and accelerated aging on posterior restorative surfaces: An SEM and AFM study

et al. 2017

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“…Generally, aging in aqueous solutions or the oral cavity may contribute to the leaching of composite components, degeneration of the cross-linked resin matrix and fostering hydrolysis of the filler-matrix interfaces. [2][3][20][21][22] Some previous studies found that the release of particular filler particles, such as strontium or barium, were different after aging in ethanol, artificial saliva and distilled water. 4,[23][24] However, as only little correlation has been observed between filler leaching and flexural strength, Drummond and others assumed that the deterioration of dental composites is more closely related to degradation of the resin matrix and the matrix-filler bonds than degradation of the glass fillers, 25 which is in accordance with other reports.…”

Section: Discussionmentioning

confidence: 99%

Investigation of Mechanical Properties of Modern Dental Composites After Artificial Aging for One Year

Hahnel¹,

Henrich²,

Bürgers³

et al. 2010

Operative Dentistry

113

101

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SUMMARYThis in vitro study investigated the aging behavior of dental composites with regard to surface roughness (SR), Vickers hardness (VH) and flexural strength (FS), and the study elucidated the impact of artificial aging parameters. One hundred and sixty-five rectangular specimens were prepared from five composites (Filtek Supreme XT, Filtek Silorane, CeramX, Quixfil, experimental ormocer) and subjected to various artificial aging protocols (storage in distilled water/ ethanol/artificial saliva for 7, 90 and 365 days; thermal cycling, 2 x 3000 cycles 5/55°C). SR, VH and FS were determined at baseline and after each aging treatment. Means and standard deviations were calculated; statistical analysis was performed using three-way ANOVA and the Tukey-Kramer multiple comparison test (α α=.05). The results showed a significant influence in the composite and aging duration on mechanical parameters; the aging medium did not have a significant influence on VH and FS, but there was a significant influence on SR. The highest overall VH was found for the experimental ormocer; Filtek Silorane yielded the lowest values. For FS, the significantly highest values were found for Filtek Silorane, and the lowest Clinical RelevanceDental composite restorations may fail due to the deterioration of mechanical properties.

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“…The fatigue on dental restorations of the composite resins is also influenced by water absorption by resin matrix (2) and occlusion cyclical forces (3). Fiber-reinforcement has been introduced to increase both flexural strength and modulus of these materials (4).…”

Section: Fracture Process Characterization Of Fiber-reinforced Dentalmentioning

confidence: 99%

Fracture process characterization of fiber-reinforced dental composites evaluated by optical coherence tomography, SEM and optical microscopy

et al. 2010

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This study used optical coherence tomography (OCT) compared to scanning electron microscopy (SEM) and optical microscopy (OM) to evaluate qualitatively crack propagation and final fracture in restorative composite materials -Filtek Z250 and Filtek Z350 (3M ESPE) -with fiber reinforcement after cyclic loading. Samples were made using a split mold. Initially, 3-point bending tests were performed to determine the maximum force and tension at the fracture moment using samples without fiber reinforcement. Then, mechanical cycling tests were performed using samples with glass fiber embedded internally. The failures were analyzed using the 3 methods described before. OCT permitted good characterization of internal crack propagation of the dental composites, which, however, could not be visualized by either SEM or OM. OCT was proven to be laboratory research tool that is easy to use, does not require any specific preparation of the samples, and is less expensive than SEM.

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Fatigue behavior of resin composites in aqueous environments

Cited by 65 publications

References 14 publications

The effect of surface sealant application and accelerated aging on posterior restorative surfaces: An SEM and AFM study

The effect of surface sealant application and accelerated aging on posterior restorative surfaces: An SEM and AFM study

Investigation of Mechanical Properties of Modern Dental Composites After Artificial Aging for One Year

Fracture process characterization of fiber-reinforced dental composites evaluated by optical coherence tomography, SEM and optical microscopy

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