Full in-vitro analyses of new-generation bulk fill dental composites cured by halogen light

• Published in: Materials Science & Engineering C 2017-08, Vol.77, p.436-445
• Main Authors: Tekin, Tuçe Hazal, Kantürk Figen, Aysel, Yılmaz Atalı, Pınar, Coşkuner Filiz, Bilge, Pişkin, Mehmet Burçin
• Format: Article
• Language: English
• Subjects: Atomic force microscopes; Atomic force microscopy; Bulk fill resin composite; Bulk polymerization; Calorimetry; Composite Resins - chemistry; Data processing; Dental; Dental health; Dental Materials; Dental restorative materials; Diamond pyramid hardness; Differential scanning calorimetry; Flowable; Fourier transforms; Halogen light; Halogens; Heat measurement; I.R. radiation; In-vitro analyses; Infrared spectra; Infrared spectroscopy; Light; Light sources; Materials science; Materials Testing; Microscopes; Near infrared radiation; Packable; Polymer matrix composites; Polymerization; Resins; Scanning electron microscopy; Solubility; Sorption; Spectroscopy, Fourier Transform Infrared; Statistical analysis; Statistical methods; Thermal analysis; Thermal properties; Thermodynamic properties; Thermogravimetric analysis; Variance analysis
• ISSN: 0928-4931; 1873-0191
• DOI: 10.1016/j.msec.2017.03.251

The objective of this study was to investigate the full in-vitro analyses of new-generation bulk-fill dental composites cured by halogen light (HLG). Two types' four composites were studied: Surefill SDR (SDR) and Xtra Base (XB) as bulk-fill flowable materials; QuixFill (QF) and XtraFill (XF) as packable bulk-fill materials. Samples were prepared for each analysis and test by applying the same procedure, but with different diameters and thicknesses appropriate to the analysis and test requirements. Thermal properties were determined by thermogravimetric analysis (TG/DTG) and differential scanning calorimetry (DSC) analysis; the Vickers microhardness (VHN) was measured after 1, 7, 15 and 30days of storage in water. The degree of conversion values for the materials (DC, %) were immediately measured using near-infrared spectroscopy (FT-IR). The surface morphology of the composites was investigated by scanning electron microscopes (SEM) and atomic-force microscopy (AFM) analyses. The sorption and solubility measurements were also performed after 1, 7, 15 and 30days of storage in water. In addition to his, the data were statistically analyzed using one-way analysis of variance, and both the Newman Keuls and Tukey multiple comparison tests. The statistical significance level was established at p