Effect of an experimental silica-nylon reinforcement on the fracture load and flexural strength of bisacrylic interim partial fixed dental prostheses

Almeida, Carolina Souza; Amaral, Marina; Gonçalves, Fernanda de Cássia Papaiz; Paes, Tarcísio José de Arruda

doi:10.1016/j.prosdent.2015.08.009

Cited by 17 publications

(37 citation statements)

References 22 publications

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“…But, similar success was not observed for thermally activated resins, mainly after aging [12]. Nevertheless, a shorter thermal aging protocol did not influence the fracture load of fiberreinforced bisacrylic interim partial fixed dental prosthesis [8].…”

Section: Introductionmentioning

confidence: 83%

“…Because of a considerable incidence of denture fracture, the need for repair has promoted the development of new materials and techniques improving fracture resistance and flexural strength of dentures. Some attempts have been made to incorporate metal structures and polymers (polyethylene and nylon) or glass fibers into the acrylic resin [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The effectiveness of fiber reinforcement depends on its structure design, orientation with respect to the applied force, total volume fraction, and bonding to resin matrix [6,8,10]. In addition, adequate load transfer between resin 2 Advances in Materials Science and Engineering matrix and fibers is essential [8,11].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, adequate load transfer between resin 2 Advances in Materials Science and Engineering matrix and fibers is essential [8,11]. Poorly impregnated fibers increase water absorption, which has a negative effect on the mechanical properties of the resin.…”

Section: Introductionmentioning

confidence: 99%

“…Poorly impregnated fibers increase water absorption, which has a negative effect on the mechanical properties of the resin. The greater the number of siloxane bridges, the lower the amount of water absorbed, resulting in greater adhesion between matrix and fibers [8].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Silica-Nylon Mesh Reinforcement for Dental Prostheses

Paes

Castro

Borges

et al. 2017

Advances in Materials Science and Engineering

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Statement of the Problem. Acrylic resin-based dentures can fracture; thus they can benefit from reinforcement. Purpose. To evaluate the effect of a novel reinforcement structure made of nylon fibers and silica particles on the flexural strength of acrylic resin after relining and aging. Materials and Methods. Bar-shaped specimens were fabricated and divided into the following experimental groups ( = 20): control (acrylic resin without reinforcement); acrylic resin nylon fiber-reinforced; acrylic nylon and silica fiberreinforced; acrylic nylon fiber-reinforced-relined; acrylic nylon and silica fiber-reinforced-relined. Half of the specimens from each group were aged by thermomechanical cycling (10000 cycles between 5 ∘ C and 55 ∘ C) before flexural strength testing to failure using a universal testing machine. Data (MPa) were statistically analyzed using analysis of variance and Tukey tests ( = 5%). Results. Adding nylon fibers or silica-containing nylon fibers significantly increased the flexural strength of all the groups tested. Within the similar groups processed in the same manner, the relining procedure reduced the flexural strength of the specimens, whereas aging process had no effect on the strength values. Conclusion. Incorporating a silica-containing nylon fiber mesh into acrylic resin yielded the greatest flexural strength for the evaluated structures.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Novel Silica-Nylon Mesh Reinforcement for Dental Prostheses

Paes

Castro

Borges

et al. 2017

Advances in Materials Science and Engineering

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Flexural strength, surface roughness, micro-CT analysis, and microbiological adhesion of a 3D-printed temporary crown material

et al. 2023

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Objective: To evaluate the thermocycling effect of 3D-printed resins on exural strength, surface roughness, microbiological adhesion, and porosity.Materials and methods: Speci cally, 150 bar specimens (8 × 2 × 2 mm) and 100 blocks (8 × 8 × 2 mm) were made and divided among ve groups, according to two factors: "material" (AR: acrylic resin, CR: composite resin, BIS: bis-acryl resin, CAD: CAD/CAM PMMA resin, and PRINT: 3D-printed resin) and "aging" (non-aged and aged -TC). Half of the samples from each group were subjected to thermocycling (10,000 thermocycles; 5-55 °C), and the rest were stored in water (37 ºC) for 24 h. The bars were then subjected to a mini exural strength (σ) test (1 mm/min; 100kgF). All the blocks were subjected to roughness values (Ra, Rq, and Rz). The non-aged blocks were subjected to porosity analysis (micro-CT (n=5)) and fungal adherence (n=10). The data of σ (MPa) and Ra, Rq, and Rz(µm) were statistically analyzed using two-way ANOVA and Tukey's test. Weibull analysis was performed to verify the reliability of the σ data. Fungal adhesion (log CFU/mL) data were analyzed using one-way ANOVA and Tukey's test.Results: For exural strength, ANOVA showed that "material" and "aging" factors were statistically signi cant (p<0.0001). The mean exural strength ranged from 49.87 MPa to 118.23 MPa between the experimental groups. The BIS group (118.23±16.26A) presented higher σ value than the AR group (89.60±9.38BC), whereas the PRINT group (49.87±7.55E) had the lowest mean of the exural strength (Tukey, a=0.05). All groups showed a decrease in σ after thermocycling, except for the PRINT group, which showed signi cantly increased exural strength after aging (PRINTTC:81.33±20.38CD). The Weibull modulus for the CRTC was signi cantly lower than those of the other groups. The AR group showed higher roughness values than the BIS group, regardless of age (p<0.0001). Porosity analyses revealed that the AR (1.369%) and BIS (6.339%) groups presented the highest porosity values among the experimental groups and that the CAD group (0.002%) had the lowest porosity. Cell adhesion was signi cantly different between the CR (6.81) and CAD (6.37) groups (p=0.036).Conclusion: Thermocycling reduced the exural strength of most provisional materials evaluated, except for 3D-printed resin. However, it did not in uence the surface roughness of each material. Moreover, Candida albicans adherence and porosity varied among materials.Clinical relevance: 3D-printed resins are promising materials for clinical applications because they have good mechanical properties and low fungal adhesion.

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Does silica–nylon mesh improves the biomechanical response of custom-made mouthguards?

et al. 2019

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Effect of an experimental silica-nylon reinforcement on the fracture load and flexural strength of bisacrylic interim partial fixed dental prostheses

Abstract: Silica-nylon reinforcement is an effective method of increasing the strength of interim restorations.

Cited by 17 publications

References 22 publications

A Novel Silica-Nylon Mesh Reinforcement for Dental Prostheses

A Novel Silica-Nylon Mesh Reinforcement for Dental Prostheses

Flexural strength, surface roughness, micro-CT analysis, and microbiological adhesion of a 3D-printed temporary crown material

Does silica–nylon mesh improves the biomechanical response of custom-made mouthguards?

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