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

Gamze Karacolak, L. Sebnem Turkun, Hayal Boyacioglu, Jack L. Ferracane

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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.

Original languageEnglish (US)
Article numberdmj/2017-032
Pages (from-to)206-213
Number of pages8
JournalDental materials journal
Issue number2
StatePublished - 2018


  • Bulk-fill resins
  • Degree of conversion
  • Microhardness
  • Radiant energy

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Dentistry


Dive into the research topics of 'Influence of increment thickness on radiant energy and microhardness of bulk-fill resin composites'. Together they form a unique fingerprint.

Cite this