Influence of increment thickness on radiant energy and microhardness of bulk-fill resin composites

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Karacolak G. , Turkun L. S. , Boyacioglu H. , FERRACANE J. L.

DENTAL MATERIALS JOURNAL, cilt.37, ss.206-213, 2018 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 37 Konu: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.4012/dmj.2017-032
  • Sayfa Sayısı: ss.206-213


Determining the energy transferred at the bottom of eleven bulk-fill resin composites, comparing top and bottom microhardness's and evaluating the correlation between microhardness and radiant energy were aimed. Samples were placed over the bottom sensor of a visible light transmission spectrophotometer and polymerized for 20 s. The bottom and top Knoop microhardness were measured. Paired t-test and correlation analysis were used for statistics (p <= 0.05). In all groups, the bottom radiant energy decreased significantly with increasing thickness. For groups of Aura 2 mm, X-tra Fil 2 and 4 mm, SDR 2 and 4 mm, X-tra Base 2 mm no significant difference was found between top and bottom microhardness. For the bottom levels of Aura, X-tra Fil, Filtek Bulk-Fill Posterior, SDR, X-tra Base groups no significant difference was found between the microhardness's of 2 and 4 mm thicknesses. For X-tra Fil, Tetric Evo Ceram Bulk-Fill, Filtek Bulk-Fill Flowable and Z100 groups radiant energy affected positively the microhardness.