Fracture load of complete-arch implant-supported prostheses reinforced with nylon-silica mesh: An in vitro study

Gonçalves, Fernanda de Cássia Papaiz; Amaral, Marina; Borges, Alexandre Luiz Souto; Gonçalves, Luiz Fernando Martins; Paes, Tarcísio José de Arruda

doi:10.1016/j.prosdent.2017.05.018

Cited by 14 publications

(23 citation statements)

References 18 publications

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“…The incidence of excessive loads on the cantilever of an implant-supported prosthesis is a factor of extreme importance when the rehabilitation success is under evaluation. Excessive loading can lead to bone loss around the implant and to the prosthesis failure (3,5). In this way, the occlusal contacts must be adjusted so that the force is reduced in the cantilever region and distributed to the implants (6).…”

Section: Introductionmentioning

confidence: 99%

“…However, it is not always possible to use a definitive prosthesis immediately, requiring the manufacture of a temporary structure to maintain the occlusion and masticatory function in the rehabilitated patient (7). In this sense, acrylic resin complete-arch implant-supported prostheses with provisional abutments provides a straight forward interim restoration with good tissue response (3,7). In a previous study it was demonstrated that incorporating silica-nylon mesh inside the acrylic resin of this prosthesis modality can increase the load bearing capacity during compression, regardless of the cantilever size (3).…”

Section: Introductionmentioning

confidence: 99%

“…In this sense, acrylic resin complete-arch implant-supported prostheses with provisional abutments provides a straight forward interim restoration with good tissue response (3,7). In a previous study it was demonstrated that incorporating silica-nylon mesh inside the acrylic resin of this prosthesis modality can increase the load bearing capacity during compression, regardless of the cantilever size (3). This result is justified since this silica-nylon mesh is able to increase the mechanical strength and dimensional stability of acrylic (8) and bis-acryl (9) resins.…”

Section: Introductionmentioning

confidence: 99%

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Stress distribution of complete-arch implant-supported prostheses reinforced with silica-nylon mesh

et al. 2019

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Background: This study evaluated the presence of a silica-nylon mesh and two cantilever lengths on the biomechanical behavior of complete-arch implant-supported prostheses. Material and Methods: Twenty-four (24) complete mandibular arch implant-supported prostheses were divided into 4 groups according to the presence of reinforcing mesh (with or without) and the cantilever length (molar -15 mm or premolar -5 mm). The specimens were submitted to strain gauge analysis (30-kgf, 10 s) at different points (molar and premolar). Three-dimensional models were created based on the in vitro specimens, and the results in the bone (microstrain), prostheses (tensile stress), implants and prosthetic screws (von-Mises stress) were evaluated using the finite element method (FEM). All materials were considered homogeneous, isotropic and linear. Strain gauge data were submitted to 3-way analysis of variance and the Tukey test (α=.05). FEM results were qualitatively analyzed using colorimetric graphs. Results: The microstrain magnitude for the prostheses with reinforcement was 519.91±359 and 583.33±661 without reinforcement (p=.001). The microstrain values for loading on the molar was 867.49±784 and on the premolar was 235.75±145. FEM corroborated with the in vitro findings for the bone behavior. The load application in the premolar showed reduced stress concentration, and a significant difference was observed between the presence or absence of the reinforcement for the prostheses.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stress distribution of complete-arch implant-supported prostheses reinforced with silica-nylon mesh

et al. 2019

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“…However, in cases of implant installation to retain and/or give support for complete dentures [6], TAAR present precarious mechanical properties and can frequently fracture [1][2][3]5,[7][8][9][10]. This can occur as a result of occlusal disharmony, overloading, fatigue and impact caused by accidents [11][12].…”

Section: Introductionmentioning

confidence: 99%

“…This can occur as a result of occlusal disharmony, overloading, fatigue and impact caused by accidents [11][12]. Specially during the osseointegration phase of a protocol type prosthesis, which usually presents cantilever [13], provisional prosthesis made entirely of TAAR may be used over the implants [6]. Thus, the contraindication for the patient is the reduced longevity of such prosthesis.…”

Section: Introductionmentioning

confidence: 99%

Influence of indirect reinforcements on the flexural strength of a thermally activated acrylic resin used for complete dentures

Miranda

Marinho

Macedo

et al. 2018

BDS

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Objetive: This research aimed to verify the performance of thermally activated acrylic resin (TAAR) combined with a mix of glass and aramid fibers and/or composite resin of indirect use by a tree point bending test. Material and Methods: Ten samples, with 65 x 10 x 2.5 mm, were prepared for each group (n = 10): CO, control of only TAAR; CR, in which an 60 mm indirect composite resin was polymerized together with the acrylic resin during the thermo-polymerization cycle; SS, in which ceramic glass mixed with aramid fibers cut 60 mm in length were incorporated into the samples; and SC, in which the same fibers were incorporated with addiction of the indirect composite resin. A three-point flexural strength test was performed with a universal testing machine with a load of 50KgF at a speed of 5 mm/min in the center of the samples supported by a suitable device. The reinforced face was placed to the tensile side. The statistical one-way ANOVA and Tukey tests were made with a significance level of 95%. Results: The mean value for the CO was 60,27 ± 24,18 MPa, for CR it was 38,39±12,75 MPa, for SS it was 79,97±12,75 Mpa and for CS it was 32,40±9,05 MPa. Conclusion: The use of glass and aramid fibers at the base of a TAAR increased the three-point flexural strength, however when indirect composite resin was incorporated, a significant drop of this mechanical property was observed. KeywordsAcrylic resin; Complete denture; Composite resin.

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Nylon—A material introduction and overview for biomedical applications

Shakiba

Ghomi

Khosravi

et al. 2021

Polymers for Advanced Techs

138

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Nylon is a human‐made material and has been applied in many industrial fields. This literature review explores the use of nylon in biomedical applications and discusses the properties and three‐dimensional (3D) printability of this material. Nylon is studied due to its versatility as an engineering plastic that can be easily transformed into fibers, films, and molded parts. Due to nylon's biocompatible nature, it has desirable chemical stability and tunable mechanical properties making this material and its derivatives widely used as sutures, catheters, dentures, and so on. However, the interactions between nylon and human body tissues have yet to be fully understood. Nevertheless, nylon is hybridized with different materials and used as skin dressings. In recent years, nylon composites have been actively researched in tissue engineering as an alternative to metallic implants with an appropriate bioactivity potential for bone growth. As nylon is supposed to be in contact with the tissue for a long time, hence researchers are developing antimicrobial strategies for the nylon materials to even promote their potential a step further. The 3D printing of nylon is currently confined to specific applications due to the printing technology's current limitations.

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Fracture load of complete-arch implant-supported prostheses reinforced with nylon-silica mesh: An in vitro study

Abstract: Reinforcement with nylon mesh increased the mean maximum load of implant-supported complete-arch prostheses at both cantilever lengths. The cantilever to the premolar (5 mm) presented the highest maximum load values to fracture.

Cited by 14 publications

References 18 publications

Stress distribution of complete-arch implant-supported prostheses reinforced with silica-nylon mesh

Stress distribution of complete-arch implant-supported prostheses reinforced with silica-nylon mesh

Influence of indirect reinforcements on the flexural strength of a thermally activated acrylic resin used for complete dentures

Nylon—A material introduction and overview for biomedical applications

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