Effect of resin thickness on the microhardness and optical properties of bulk-fill resin composites

Objectives This study evaluated the effects of the resin thickness on the microhardness and optical properties of bulk-fill resin composites. Methods Four bulk-fill (Venus Bulk Fill, Heraeus Kulzer; SDR, Dentsply Caulk; Tetric N-Ceram Bulk Fill, Ivoclar vivadent; SonicFill, Kerr) and two regular res...

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Bibliographic Details
Main Authors: Eun-Ha Kim (Author), Kyoung-Hwa Jung (Author), Sung-Ae Son (Author), Bock Hur (Author), Yong-Hoon Kwon (Author), Jeong-Kil Park (Author)
Format: Book
Published: Korean Academy of Conservative Dentistry, 2015-05-01T00:00:00Z.
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LEADER 00000 am a22000003u 4500
001 doaj_a43156f6a64c48b5b2a4db56a72d0ce7
042 |a dc 
100 1 0 |a Eun-Ha Kim  |e author 
700 1 0 |a Kyoung-Hwa Jung  |e author 
700 1 0 |a Sung-Ae Son  |e author 
700 1 0 |a Bock Hur  |e author 
700 1 0 |a Yong-Hoon Kwon  |e author 
700 1 0 |a Jeong-Kil Park  |e author 
245 0 0 |a Effect of resin thickness on the microhardness and optical properties of bulk-fill resin composites 
260 |b Korean Academy of Conservative Dentistry,   |c 2015-05-01T00:00:00Z. 
500 |a 10.5395/rde.2015.40.2.128 
500 |a 2234-7658 
500 |a 2234-7666 
520 |a Objectives This study evaluated the effects of the resin thickness on the microhardness and optical properties of bulk-fill resin composites. Methods Four bulk-fill (Venus Bulk Fill, Heraeus Kulzer; SDR, Dentsply Caulk; Tetric N-Ceram Bulk Fill, Ivoclar vivadent; SonicFill, Kerr) and two regular resin composites (Charisma flow, Heraeus Kulzer; Tetric N-Ceram, Ivoclar vivadent) were used. Sixty acrylic cylindrical molds were prepared for each thickness (2, 3 and 4 mm). The molds were divided into six groups for resin composites. The microhardness was measured on the top and bottom surfaces, and the colors were measured using Commission Internationale d'Eclairage (CIE) L*a*b* system. Color differences according to the thickness and translucency parameters and the correlations between the microhardness and translucency parameter were analyzed. The microhardness and color differences were analyzed by ANOVA and Scheffe's post hoc test, and a student t-test, respectively. The level of significance was set to α = 0.05. Results The microhardness decreased with increasing resin thickness. The bulk-fill resin composites showed a bottom/top hardness ratio of almost 80% or more in 4 mm thick specimens. The highest translucency parameter was observed in Venus Bulk Fill. All resin composites used in this study except for Venus Bulk Fill showed linear correlations between the microhardness and translucency parameter according to the thickness. Conclusions Within the limitations of this study, the bulk-fill resin composites used in this study can be placed and cured properly in the 4 mm bulk. 
546 |a EN 
690 |a Dentistry 
690 |a RK1-715 
655 7 |a article  |2 local 
786 0 |n Restorative Dentistry & Endodontics, Vol 40, Iss 2, Pp 128-135 (2015) 
787 0 |n https://doi.org/10.5395/rde.2015.40.2.128 
787 0 |n https://doaj.org/toc/2234-7658 
787 0 |n https://doaj.org/toc/2234-7666 
856 4 1 |u https://doaj.org/article/a43156f6a64c48b5b2a4db56a72d0ce7  |z Connect to this object online.