Polymerization shrinkage stress of contemporary dental composites: Comparison of two measurement methods

  • SZCZESIO-WLODARCZYK Agata
    University Laboratory of Materials Research, Medical University of Lodz
  • GAROUSHI Sufyan
    Department of Biomaterials Science and Turku Clinical Biomaterials Center-TCBC, Institute of Dentistry, University of Turku
  • VALLITTU Pekka
    Department of Biomaterials Science and Turku Clinical Biomaterials Center-TCBC, Institute of Dentistry, University of Turku Wellbeing Services County of South-West Finland
  • BOCIONG Kinga
    Department of General Dentistry, Medical University of Lodz
  • LASSILA Lippo
    Department of Biomaterials Science and Turku Clinical Biomaterials Center-TCBC, Institute of Dentistry, University of Turku

抄録

<p>The aim of this study was to compare two testing methodologies employed for assessing the polymerization shrinkage stress of dental resin composites. Ten commercial resin composites were investigated (EverX Posterior & Flow; G-ænial Anterior, Posterior, A’CHORD & Universal Injectable; Filtek One Bulk Fill & Universal Restorative; SDR flow+ and Aura Bulk Fill). Photoelastic and contraction forces measurement methods were performed. The slope of the linear trendline and C-factor of specimens were calculated. The shrinkage stress values (range between: 6.4–13.4 MPa) obtained by the photoelastic method were higher for all resin composites than the values obtained by contraction forces measurements (range between 1.2–4.8 MPa). However, there was a strong linear correlation between these methods (r=0.8). The use of both investigated methods revealed important information about the shrinkage behavior of the restorative resin composites.</p>

収録刊行物

  • Dental Materials Journal

    Dental Materials Journal 43 (2), 155-163, 2024-03-25

    一般社団法人 日本歯科理工学会

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