Acrylic resin-fiber composite—part I: The effect of fiber concentration on fracture resistance

Vallittu, Pekka K.; Lassila, Veijo; Lappalainen, R

doi:10.1016/0022-3913(94)90446-4

Cited by 141 publications

(116 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On fiber reinforcement, glass fibers are lauded for their reinforcing efficiency in improving impact strength and for their excellent esthetic qualities 10) . Nonetheless, fiber reinforcement effectiveness depends on a slew of factors: quantity of fibers in the resin matrix 11,12) , length of fibers 12) , form of fibers (i.e., chopped versus continuous) 13) , orientation of fibers 14) , quality of adhesion between fibers and the polymer matrix 15) , and impregnation of fibers with resin 16) . Fiber pre-impregnation can be carried out with different types of monomer resins, such as dimethacrylate, trimethacrylate, or dendrimer.…”

Section: Introductionmentioning

confidence: 99%

Creep of experimental short fiber-reinforced composite resin

et al. 2012

View full text Add to dashboard Cite

The purpose of this study was to investigate the reinforcing effect of short E-glass fiber fillers oriented in different directions on composite resin under static and dynamic loading. Experimental short fiber-reinforced composite resin (FC) was prepared by mixing 22.5 wt% of short E-glass fibers, 22.5 wt% of resin, and 55 wt% of silane-treated silica fillers. Three groups of specimens (n=5) were tested: FC with isotropic fiber orientation, FC with anisotropic fiber orientation, and particulate-filled composite resin (PFC) as a control. Time-dependent creep and recovery were recorded. ANOVA revealed that after secondary curing in a vacuum oven and after storage in dry condition for 30 days, FC with isotropic fiber orientation (1.73%) exhibited significantly lower static creep value (p<0.05) than PFC (2.54%). For the different curing methods and storage conditions evaluated in this study, FC achieved acceptable static and dynamic creep values when compared to PFC.

show abstract

Section: Introductionmentioning

confidence: 99%

Creep of experimental short fiber-reinforced composite resin

et al. 2012

View full text Add to dashboard Cite

show abstract

“…For example, various authors have argued that the greater the bond between the glass fibers and resin, the greater the flexural resistance of the samples [12,13,23,24]. Silane has been described as the material that effectively promotes this bond between PMMA and glass fiber [12,13,18,24,25].…”

Section: Discussionmentioning

confidence: 99%

“…The immersion of fibers in MMA monomer is seen as the cause of the presence of air bubbles at the fiber-resin interface, resulting from greater polymerization shrinkage of the MMA monomer (21%) in comparison with the PMMA polymer (7%). This difference in polymerization shrinkage is associated with a smaller increase in flexural resistance, and therefore, the addition of a fluid mixture of PMMA-MMA is proposed, in preference to immersing the fiber in MMA monomer [24]. Thus , analysis and comparison of the results obtained with those found in the literature should be done very carefully, taking care not to arrive at unfounded conclusions, given some of the differences in the process of test specimen preparation among the various studies.…”

Section: Discussionmentioning

confidence: 99%

“…A higher concentration by weight of glass fibers should also be considered as a factor in the increase in flexural resistance and modulus of elasticity of PMMA resins [24]. Concentrations by weight as high as 21% to 45.4% for glass fibers have been associated with an increase in resistance and rigidity of these polymers when reinforced with these fibers [19,24,25,27].…”

Section: Discussionmentioning

confidence: 99%

“…Concentrations by weight as high as 21% to 45.4% for glass fibers have been associated with an increase in resistance and rigidity of these polymers when reinforced with these fibers [19,24,25,27]. This fact could explain the significant increase in flexural resistance with the unidirectional Fibrex-Lab® and Perma fiber® fibers were used.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of flexural strength of a self cured acrylic resin used for fabricating provisional restorations with three different types of reinforcements

Olivieri

Costa

Miranda

et al. 2013

BDS

View full text Add to dashboard Cite

Objective: To evaluate the effect of three different types of reinforcements on the flexural strength of a chemically activated acrylic resin.Materials and Methods: A Universal test machine EMIC 2000 was used at a speed of 5mm/min., to evaluate the flexural strength of 40 test specimens (65mm X 10mm X 3mm) fabricated of chemically activated acrylic resin, distributed into the following four groups: (1) control – without reinforcement; (2) reinforced with 0.7mm stainless steel orthodontic wire; (3) reinforced with Fibrex-lab® glass fiber and; (4) reinforced with Perma-Fiber®glass fiber.Results: The following flexural strength values were obtained: Group 1 – 80.60 MPa; Group 2 – 95.96 MPa; Group 3 – 105.70 MPa; and Group 4 – 108.70 MPa. The analysis of variance (p < 0.05) showed significant difference among the groups and the Tukey test showed that the control group presented the worst behavior, followed by reinforcement with metal wire, which showed statistically similar results to those of Group 3, with no difference shown between the fiber groups.Conclusion: Reinforcement with glass fibers present better flexural strength in comparison with the other methods.

show abstract

Reinforcement of acrylic denture base resin by incorporation of various fibers

Chen

Liang

Yen

2001

J. Biomed. Mater. Res.

View full text Add to dashboard Cite

This study was designed to evaluate improvements in the mechanical properties of acrylic resin following reinforcement with three types of fiber. Polyester fiber (PE), Kevlar fiber (KF), and glass fiber (GF) were cut into 2, 4, and 6 mm lengths and incorporated at concentrations of 1, 2, and 3% (w/w). The mixtures of resin and fiber were cured at 70 degrees C in a water bath for 13 h, then at 90 degrees C for 1 h, in 70 x 25 x 15 mm stone molds, which were enclosed by dental flasks. The cured resin blocks were cut to an appropriate size and tested for impact strength and bending strength following the methods of ASTM Specification No. 256 and ISO Specification No. 1567, respectively. Specimens used in the impact strength test were reused for the Knoop hardness test. The results showed that the impact strength tended to be enhanced with fiber length and concentration, particularly PE at 3% and 6 mm length, which was significantly stronger than other formulations. Bending strength did not change significantly with the various formulations when compared to a control without fiber. The assessment of Knoop hardness revealed a complex pattern for the various formulations. The Knoop hardness of 3%, 6 mm PE-reinforced resin was comparable to that of the other formulations except for the control without fiber, but for clinical usage this did not adversely affect the merit of acrylic denture base resin. It is concluded that, for improved strength the optimum formulation to reinforce acrylic resin is by incorporation of 3%, 6 mm length PE fibers.

show abstract

Acrylic resin-fiber composite—part I: The effect of fiber concentration on fracture resistance

Cited by 141 publications

References 17 publications

Creep of experimental short fiber-reinforced composite resin

Creep of experimental short fiber-reinforced composite resin

Analysis of flexural strength of a self cured acrylic resin used for fabricating provisional restorations with three different types of reinforcements

Reinforcement of acrylic denture base resin by incorporation of various fibers

Contact Info

Product

Resources

About