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Polymerization shrinkage evaluation in experimental dental composite filled with montmorillonite nanoparticles

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Abstract

This study aimed to develop experimental dental restorative composites by the addition of montmorillonite (MMT) nanoparticles in a polymeric matrix-based BisGMA/TEGDMA, to assess the possibility of a different dimensional behavior during the photo-polymerization. The characterization of experimental composites was established with the following analyses: thermal–mechanical analysis (TMA), X-ray diffraction (XRD) and transmission electron microscopy. Data for TMA were analyzed using one-way ANOVA and Tukey test (p < 0.05). It was observed that the experimental composites filled with MMT nanoparticle showed statistically similar polymerization shrinkage values (by TMA analysis) in the concentration of 30% and statistically lower polymerization shrinkage values in the concentration of 50%, compared to composites filled with barium glass (BG—control groups). These results may be related to the interaction polymeric matrix/MMT nanoparticles and the formation of nanocomposites, observed by XRD and TEM analyses.

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Authors and Affiliations

  1. Nuclear and Energy Research Institute, IPEN-CNEN/SP, Av. Prof. Lineu Prestes, 2242, São Paulo, SP, 05508-000, Brazil

    Luiza M. P. Campos, Tamiris M. R. Santos, Vinícius J. Santos, Rebeca Grecco-Romano, Mariana J. Santos & Duclerc F. Parra

  2. School of Dentistry, University of Santo Amaro, R. Professor Enéas de Siqueira Neto, 340, São Paulo, SP, 04829-300, Brazil

    Letícia C. Boaro

Authors
  1. Luiza M. P. Campos
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  2. Letícia C. Boaro
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  3. Tamiris M. R. Santos
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  4. Vinícius J. Santos
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  5. Rebeca Grecco-Romano
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  6. Mariana J. Santos
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  7. Duclerc F. Parra
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Correspondence to Luiza M. P. Campos.

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Campos, L.M.P., Boaro, L.C., Santos, T.M.R. et al. Polymerization shrinkage evaluation in experimental dental composite filled with montmorillonite nanoparticles. J Therm Anal Calorim 131, 771–774 (2018). https://doi.org/10.1007/s10973-017-6419-9

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  • DOI: https://doi.org/10.1007/s10973-017-6419-9

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