Flexural Strength of Composites: Influences of Polyethylene Fiber Reinforcement and Type of Composite

Overview

Journal Clin Oral Investig

Specialty Dentistry

Date 2003 Apr 12

PMID 12690535

Citations 5

Authors

C L Pereira

F F Demarco

M S Cenci

P W R Osinaga

E M Piovesan

Affiliations

Soon will be listed here.

Abstract

Main Problem: The microfill veneering of hybrid composite restorations has been indicated to improve esthetics. Also, polyethylene fiber reinforcement has been proposed for use in composite restorations in high-stress clinical situations. However, minimal information in the literature addresses the influence of such combinations on the resistance to fracture. The purpose of this study was to investigate the flexural strength of two composites, a microfill and a hybrid, the effect of their combination, and the influence of polyethylene fiber reinforcement.

Materials And Methods: Twenty-eight specimens were prepared using a standard metallic mold (20x2x2 mm) and divided into groups of seven each: Filtek Z-250 (3M ESPE, St. Paul, Minn., USA) (group I), Filtek A-110 (3M ESPE) (group II), Filtek Z-250 combined with Filtek A-110 (group III), and Filtek Z-250 combined with polyethylene fiber (Ribbond, Seattle, Wash., USA) (group IV). The specimens were stress-loaded to fracture in a three-point bending device according to International Standardization Organization (ISO) 4049.

Results: Data were analyzed using analysis of variance and Tukey's test at a 0.05 level of significance. No statistically significant differences were observed between groups I and IV. Group II, however, exhibited statistically lower resistance to fracture than the other groups. Group III presented intermediate results, showing statistically higher fracture resistance than group II but lower than group I.

Conclusions: With the methodology employed, microfill composite presented the lowest flexural strength, but its association with hybrid composite increased the resistance to fracture. The combination of polyethylene fiber and hybrid composite did not present higher flexural strength than hybrid composite alone.

Citing Articles

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Glass Fibers Reinforced Concrete: Overview on Mechanical, Durability and Microstructure Analysis.

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Flexural strength of glass and polyethylene fiber combined with three different composites.

Sharafeddin F, Alavi A, Talei Z J Dent (Shiraz). 2014; 14(1):13-9.

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The effect of glass and polyethylene fiber reinforcement on flexural strength of provisional restorative resins: an in vitro study.

Natarajan P, Thulasingam C J Indian Prosthodont Soc. 2014; 13(4):421-7.

PMID: 24431771 PMC: 3792301. DOI: 10.1007/s13191-012-0148-3.

Fiber-reinforced fixed partial dentures: a preliminary retrospective clinical study.

Piovesan E, Demarco F, Piva E J Appl Oral Sci. 2008; 14(2):100-4.

PMID: 19089039 PMC: 4327450. DOI: 10.1590/s1678-77572006000200007.

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