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Odontology
Published in: Odontology 3/2019

Open Access 01-07-2019 | Injectable Filler | Original Article

Characterization of a new fiber-reinforced flowable composite

Authors: Lippo Lassila, Eija Säilynoja, Roosa Prinssi, Pekka Vallittu, Sufyan Garoushi

Published in: Odontology | Issue 3/2019

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Abstract

This study aimed to evaluate certain physical properties including surface wear of a new experimental short fiber-reinforced flowable resin composite (SFRC) in comparison with different commercial flowable bulk fill resin composites (SDR, Tetric EvoFlow Bulk Fill, Filtek Bulk Fill Flowable and Estelite Bulk Fill Flow). The following properties were examined according to ISO standard: flexural strength, flexural modulus, fracture toughness, water sorption, volumetric shrinkage, and depth of cure. Degree of conversion (DC%) was determined by FTIR spectrometry. A wear test was conducted with 15000 chewing cycles using a dual-axis chewing simulator. Wear depth was measured by a three-dimensional (3D) noncontact optical profilometer. Scanning electron microscopy was used to evaluate the microstructure of SFRC. Data were statistically analyzed with analysis of variance ANOVA (p = 0.05). SFRC exhibited the highest fracture toughness (2.8 MPa m1/2) and flexural strength (146.5 MPa) values (p < 0.05) and the greatest depth of cure (5 mm) and lowest wear depth (18.2 µm) among the flowable bulk fill materials tested. SDR showed the lowest volumetric shrinkage percentage (2.9%), while the other resin composites had comparable volumetric shrinkage values (p > 0.05). The new short fiber-reinforced flowable resin composite differed significantly in its measured fracture toughness compared to the tested flowable bulk fill resin composites.
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Metadata
Title
Characterization of a new fiber-reinforced flowable composite
Authors
Lippo Lassila
Eija Säilynoja
Roosa Prinssi
Pekka Vallittu
Sufyan Garoushi
Publication date
01-07-2019
Publisher
Springer Japan
Published in
Odontology / Issue 3/2019
Print ISSN: 1618-1247
Electronic ISSN: 1618-1255
DOI
https://doi.org/10.1007/s10266-018-0405-y

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