Influence of fibre reinforcement on selected mechanical properties of dental composites

• Autorzy: Niewczas A. M. , Zamościńska J. , Krzyżak A. , Pieniak D. , Walczak A. , Bartnik G.

Identyfikatory

DOI

10.5277/ABB-00486-2015-04

• Języki publikacji: EN

Abstrakty

EN

For splinting or designing adhesive bridges, reconstructive composite structures with increased mechanical properties owing to embedded reinforcement fibres are used. The aim of this article was to determine the influence of glass and aramid fibres on the mechanical strength of composites reinforced with these fibres. Methods: Two polymer-ceramic microhybrid materials: Boston and Herculite were tested. Three types of reinforcement fibres were used: aramid (Podwiązka) with a single layer weave, a single layer weave glass fibre (FSO) and triple layer weave glass fibre (FSO evo). Tests were conducted in accordance with the requirements of ISO 4049:2009. The following material types were chosen for research: Boston, Boston + Podwiązka, Herculite, Herculite + Podwiązka, Herculite + FSO and Herculite + FSO evo. The scope of research included: flexural strength B, bending modulus of elasticity εB and work to failure of the reinforced composite Wfb. Additionally, microscopic observations of fracture occurring in samples were made. Results: In comparison: the Herculite (97.7 MPa) type with the Herculite + FSO evo (177.5 MPa) type was characterized by the highest strength. Fibre reinforcement resulted in decreasing the elasticity modulus: Herculite + reinforcement (6.86 GPa; 6.33 GPa; 6.11 GPa) in comparison with the Herculite (9.84 GPa) and respectively Boston + reinforcement (10.08 GPa) as compared with the Boston (11.81 GPa). Conclusions: Using glass fibres increases flexural strength of the test composites. Using aramid fibres does not change their strength. The elasticity modulus of the reinforced reconstructive structures decreases after application of either type of fibres. However, their resistance to the crack initiation increases.

Słowa kluczowe

EN

mechanical properties; ceramic-polymer light-cured compceramicosites; fibre reinforcement

PL

właściwości mechaniczne; włókno wzmacniające; kompozyty ceramiczno-polimerowe

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2017
• Tom: Vol. 19, no. 2
• Strony: 3--10
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Niewczas A. M.

• Department of Conservative Dentistry with Endodontics, Medical University of Lublin, Poland

autor

Zamościńska J.

• Department of Conservative Dentistry with Endodontics, Medical University of Lublin, Poland

autor

Krzyżak A.

• Department of Airframe and Engine, Polish Air Force Academy, Dęblin, Poland

autor

Pieniak D.

• Department of Applied Mechanics, Main School of Fire Service in Warsaw, Poland

autor

Walczak A.

• Department of Applied Mechanics, Main School of Fire Service in Warsaw, Poland

autor

Bartnik G.

• Department of Mechanical Engineering and Automation, University of Life Science in Lublin, Poland

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).