Flexural properties of three kinds of experimental fiber-reinforced composite posts

Kim, Mi-Joo; Jung, W.W.; Oh, Seunghan; Hattori, Masayuki; Yoshinari, Masao; Kawada, Eiji; Oda, Yutaka; Bae, Ji-Myung

doi:10.4012/dmj.2010-053

Cited by 15 publications

(17 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Aramid fibers have been shown to increase the impact strength of PMMA resin significantly and to enhance the fracture resistance of acrylic resin 10,15,20) . UHMWP fibers are biocompatible and possess a high degree of stiffness, toughness, and strength 11,21,22) . The mechanical properties of FRC are dependent upon the composition of the fiber, fiber orientation, the ratio of fiber to resin, and the adhesion between the fiber and resin matrix 11,[23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

“…UHMWP fibers are biocompatible and possess a high degree of stiffness, toughness, and strength 11,21,22) . The mechanical properties of FRC are dependent upon the composition of the fiber, fiber orientation, the ratio of fiber to resin, and the adhesion between the fiber and resin matrix 11,[23][24][25] . A hybrid FRC is obtained with two or more different types of fibers in a single matrix and has a better combination of properties than composites containing only a single fiber type 10) .…”

Section: Introductionmentioning

confidence: 99%

“…Another method that has been used to reinforce the PMMA is adding various types of fiber reinforcements. A fiber-reinforced composite (FRC) consists of a matrix and the dispersed phase, which includes materials such as fibers 10,11) . Various types of fibers such as carbon, glass, polyaromatic polyamide (aramid), and ultra-high molecular weight polyethylene (UHMWP) have been studied [12][13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reinforcing effects of different fibers on denture base resin based on the fiber type, concentration, and combination

Lee

et al. 2012

Dent. Mater. J.

Self Cite

View full text Add to dashboard Cite

The aim of this study was to evaluate the reinforcing effects of three types of fibers at various concentrations and in different combinations on flexural properties of denture base resin. Glass (GL), polyaromatic polyamide (PA) and ultra-high molecular weight polyethylene (PE) fibers were added to heat-polymerized denture base resin with volume concentrations of 2.6%, 5.3%, and 7.9%, respectively. In addition, hybrid fiber-reinforced composite (FRC) combined with either two or three types of fibers were fabricated. The flexural strength, modulus and toughness of each group were measured with a universal testing machine at a crosshead speed of 5 mm/min. In the single fiber-reinforced composite groups, the 5.3% GL and 7.9% GL had the highest flexural strength and modulus; 5.3% PE was had the highest toughness. Hybrid FRC such as GL/PE, which showed the highest toughness and the flexural strength, was considered to be useful in preventing denture fractures clinically.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reinforcing effects of different fibers on denture base resin based on the fiber type, concentration, and combination

Lee

et al. 2012

Dent. Mater. J.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fiber post used in the present study showed superior mechanical properties than fiber posts with similar diameters tested in some previous studies [17][18][19] . According to Abdulmajeed et al 17 , increasing fiber volume fraction enhances the mechanical properties of fiber posts.…”

Section: Ereifej N Garcia E Noroña D and Grande Rmentioning

confidence: 59%

The effects of composition, diameter and post-curing methods on the flexural properties of fiber posts

Ereifej¹,

García²,

Noroña³

2016

J Oral Res

View full text Add to dashboard Cite

Abstract:Objective: This study evaluated the influence of fiber composition, diameter and post-curing treatments performed at relining on flexural strength and modulus of fiber-posts. Materials and methods: Sixty posts of Reforpost® Glass Fiber [GF]) and Reforpost® Carbon Fiber [CF] (Angelus, Londrina, PR, Brazil) with diameters of 1.0mm and 1.4mm were used. Each group was further subdivided into three subgroups (n=5) according to treatment received: dry-stored control group (C), oven-cured (Ov) or autoclaved (Ac). A universal testing machine measured flexural strength and modulus of all specimens. Results: Post composition and post-curing treatments had no significant effects on flexural properties of specimens while post diameter had significant effects (p<0.05). The highest flexural strength and modulus (MPa) (1331±95.8 and 21532±1550, respectively) were obtained with Ov/GF/1.1, while lowest values (890±79.4 and 10675±952, respectively) were for Ac/GF/1.5. Conclusions: 1.1mm diameter posts had better mechanical properties than 1.5mm thick posts. Neither post composition nor post-curing procedures affected the mechanical properties of relined posts.

show abstract

“…In contrast, the specimens in the current study that were sectioned with a carbide disk presented a more regular surface, showing that water irrigation may be sufficient to promote a more homogeneous surface and prevent the formation of burnt areas (Burns). Two-point 2) and three-point 16,[20][21][22] flexural strength test have been extensively used to assess the mechanical properties (hardness, tensile, flexural modulus) of fiber reinforced polymeric materials used in dentistry. Therefore, these evaluation methods provide data that can be compared to the data from other studies.…”

Section: Discussionmentioning

confidence: 99%

Fiber-matrix integrity, micromorphology and flexural strength of glass fiber posts: Evaluation of the impact of rotary instruments

Pereira

Lançanova

Wandscher

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

Several rotary instruments have been daily employed on clinic to promote cut aiming to adjust the length of fiber posts to the radicular conduct, but there is no information on the literature about the effects of the different rotary instruments and its impact on the micromorphology of surface and mechanical properties of the glass fiber post. This study aimed the impact of rotary instruments upon fiber-matrix integrity, micromorphology and flexural-strength of glass-fiber posts (GFP). GFP (N=110) were divided into 5 groups: Ctrl: as-received posts, DBc: coarse diamond-bur, DBff: extra-fine diamond-bur, CB: carbide-bur, DD: diamond-disc. Cutting procedures were performed under abundant irrigation. Posts exposed to rotary instruments were then subjected to 2-point inclined loading test (compression 45°) (n=10/group) and 3-point flexural-strength test (n=10/group). Fiber-matrix integrity and micromorphology at the cut surface were analyzed using a SEM (n=2/group). Cutting procedures did not significantly affect the 2-point (51.7±4.3-56.7±5.1 MPa) (p=0.0233) and 3-point flexural-strength (671.5±35.3-709.1±33.1 MPa) (p=0.0968) of the posts (One-way ANOVA and Tukey s test). Fiber detachment was observed only at the end point of the cut at the margins of the post. Cut surfaces of the CB group were smoother than those of the other groups. After 3-point flexural strength test, fiber-matrix separation was evident at the tensile side of the post. Rotary instruments tested with simultaneous water-cooling did not affect the resistance of the tested fiber posts but caused disintegration of the fibers from the matrix at the end of the cut, located at the margins. VALANDRO; Email: lfvalandro@hotmail.com Tel: (55) Fax: (55) 55-3220-927 2 ABSTRACTThis study assessed the impact of rotary instruments upon fiber-matrix integrity, micromorphology and flexural strength of glass fiber posts (GFP). Glass fiber posts (N=110) were divided into 5 groups: Ctrl: Asreceived posts, DBc: Coarse diamond bur, DBff: Extra-fine diamond bur, CB: Carbide bur, DD: Diamond disc. Cutting procedures were performed under abundant irrigation. Posts exposed to rotary instruments were then subjected to 2-point (compression 45°) (n=10/group) and 3-point flexural strength (n=10/group).Fiber-matrix integrity and micromorphology at the cut surface were analyzed using a Scanning Electron Microscope (n=2/group). Cutting procedures did not significantly affect the 2-point (51.7±4.3 -56.7±5.1 MPa) (p=0.0233) and 3-point flexural strength (671.5±35.3 -709.1±33.1 MPa) (p=0.0968) of the posts (One-way ANOVA and Tukey's test). Fiber detachment was observed only at the end point of the cut at the margins of the post. CB cut surfaces was smoother than those of the other groups. After 3-point flexural strength test, fiber-matrix separation was evident at the tensile side of the post.3

show abstract

Flexural properties of three kinds of experimental fiber-reinforced composite posts

Cited by 15 publications

References 32 publications

Reinforcing effects of different fibers on denture base resin based on the fiber type, concentration, and combination

Reinforcing effects of different fibers on denture base resin based on the fiber type, concentration, and combination

The effects of composition, diameter and post-curing methods on the flexural properties of fiber posts

Fiber-matrix integrity, micromorphology and flexural strength of glass fiber posts: Evaluation of the impact of rotary instruments

Contact Info

Product

Resources

About