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Comprehensive properties of a novel fiber reinforced composite with a UEDMA-based resin matrix

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Abstract

The traditional fiber reinforced composite (FRC) contains bisphenol A glycidyl methacrylate (bis-GMA) in the resin matrix, which is thought to have some disadvantages. This research aimed at replacing bis-GMA with another monomer—urethane dimethacrylate (UEDMA), with the desired properties for dental use still retained. Four groups were prepared with light-curing (n = 30), one Control group with a bis-GMA-based resin matrix and three experimental groups with UEDMA-based matrices (Exper 1, Exper 2 and Exper 3 with a varying UEDMA weight percentage). Specimens were stored in dry conditions for 24 h or in deionized water for 1, 3, 6 or 12 months prior to the tests. Water sorption (n = 6), Vicker’s hardness (n = 6) and flexural properties (n = 6) after each storage time were investigated. Scanning electron microscopy (SEM) images were taken at the fracture sites after 3-point bending. All the results were statistically analyzed (α = 0.05). The Exper 1 group exhibited the lowest weight increase after water storage among the experimental groups. As for dry conditions, 1- and 6-month storage, different resin matrix compositions made no significant difference to hardness, while for 3- and 12-month storage, “Control” possessed the highest hardness. The Control group’s strength and modulus, Exper 1 and Exper 2’s modulus were stable during water storage. Compared to other experimental groups, Exper 1 had the highest strength and modulus values with most of the storage times. SEM images showed relatively good adhesion between the fiber and the matrix. With all the tested properties considered, the Exper 1 group had superior performance among all the three experimental groups.

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Acknowledgments

Esstech Inc. (Essington, PA, USA) is acknowledged for generously donating UEDMA and HEMA monomers for this study. Stick Tech Ltd. (Turku, Finland) is gratefully thanked for offering the E-glass fiber materials.

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Authors and Affiliations

  1. Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Hong Kong SAR, People’s Republic of China

    Meng Zhang, Jukka Pekka Matinlinna, Michael George Botelho & Eija Sinikka Säilynoja

  2. Stick Tech Ltd, Lemminkäisenkatu 46, 20521, Turku, Finland

    Eija Sinikka Säilynoja

Authors
  1. Meng Zhang
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  2. Jukka Pekka Matinlinna
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  3. Michael George Botelho
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  4. Eija Sinikka Säilynoja
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Correspondence to Jukka Pekka Matinlinna.

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Zhang, M., Matinlinna, J.P., Botelho, M.G. et al. Comprehensive properties of a novel fiber reinforced composite with a UEDMA-based resin matrix. Odontology 102, 176–183 (2014). https://doi.org/10.1007/s10266-013-0114-5

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  • DOI: https://doi.org/10.1007/s10266-013-0114-5

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