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HOME > Restor Dent Endod > Volume 35(5); 2010 > Article
Basic Research Power density of light curing units through resin inlays fabricated with direct and indirect composites
Hoon-Sang Chang, DDS, PhD1, Young-Jun Lim, DDS1, Jeong-Mi Kim, MS2, Sung-Ok Hong, DDS, MS1
2010;35(5):-358.
DOI: https://doi.org/10.5395/JKACD.2010.35.5.353
Published online: September 30, 2010

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Correspondence to Hoon-Sang Chang, DDS, PhD. Assistant Professor, Department of Conservative Dentistry, Wonkwang University College of Dentistry and Dental Research Institute, 344-2 Shinyong-dong, Iksan, Korea 570-210. Tel, +82-63-859-2931; Fax, +82-63-859-2932; husch03@wonkwang.ac.kr
• Received: July 22, 2010   • Revised: August 9, 2010   • Accepted: August 10, 2010

Copyright © 2010 Korean Academy of Conservative Dentistry

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  • Objectives
    The purpose of this study was to measure the power density of light curing units transmitted through resin inlays fabricated with direct composite (Filtek Z350, Filtek Supreme XT) and indirect composite (Sinfony).
  • Materials and Methods
    A3 shade of Z350, A3B and A3E shades of Supreme XT, and A3, E3, and T1 shades of Sinfony were used to fabricate the resin inlays in 1.5 mm thickness. The power density of a halogen light curing unit (Optilux 360) and an LED light curing unit (Elipar S10) through the fabricated resin inlays was measured with a hand held dental radiometer (Cure Rite). To investigate the effect of each composite layer consisting the resin inlays on light transmission, resin specimens of each shade were fabricated in 0.5 mm thickness and power density was measured through the resin specimens.
  • Results
    The power density through the resin inlays was lowest with the Z350 A3, followed by Supreme XT A3B and A3E. The power density was highest with Sinfony A3, E3, and T1 (p < 0.05). The power density through 0.5 mm thick resin specimens was lowest with dentin shades, Sinfony A3, Z350 A3, Supreme XT A3B, followed by enamel shades, Supreme XT A3E and Sinfony E3. The power density was highest with translucent shade, Sinfony T1 (p < 0.05).
  • Conclusions
    Using indirect lab composites with dentin, enamel, and translucent shades rather than direct composites with one or two shades could be advantageous in transmitting curing lights through resin inlays.
  • Keywords: Halogen light curing unit; Hand held dental radiometer; LED light curing unit; Power density; Resin inlay; Sinfony
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Table 1
Composition of the resin composites used in this study

The composition of the organic matrix, filler, and filler contents was provided by the manufacturers.

Bis-GMA, Bisphenol A diglycidyl ether dimethacrylate; UDMA, urethane dimethacrylate; Bis-EMA, Bisphenol A polyethylene glycol diether dimethacrylate; TEGDMA, triethylene glycol dimethacrylate.

jkacd-35-353-i001.jpg
Table 2
Power density (mW/cm2 ± SD) of light curing units through resin specimens of 1.5 mm thickness

*The superscripts with the same letters are not significantly different at α= 0.05.

jkacd-35-353-i002.jpg
Table 3
Power density (mW/cm2 ± SD) of light curing units through resin specimens of 0.5 mm thickness

*The superscripts with the same letters are not significantly different at α= 0.05.

jkacd-35-353-i003.jpg

Tables & Figures

REFERENCES

    Citations

    Citations to this article as recorded by  
    • Comparison of polymerization shrinkage of dual-cure core build-up resin according to shade and curing mode
      Yoorina Choi, Karl Lee, Hoon-Sang Chang
      Oral Biology Research.2019; 43(4): 243.     CrossRef
    • Early Hardness and Shear Bond Strength of Dual-cure Resin Cement Light Cured Through Resin Overlays With Different Dentin-layer Thicknesses
      H-S Chang, J-W Kim
      Operative Dentistry.2014; 39(4): 398.     CrossRef
    • Effects of layering technique on the shade of resin overlays and the microhardness of dual cure resin cement
      Hoon-Sang Chang, Sung-Ok Hong
      Brazilian Oral Research.2014;[Epub]     CrossRef
    • Light curing of dual cure resin cement
      Hoon-Sang Chang
      Restorative Dentistry & Endodontics.2013; 38(4): 266.     CrossRef
    • Power density of various light curing units through resin inlays with modified layer thickness
      Sung-Ok Hong, Yonghui Oh, Jeong-Bum Min, Jin-Woo Kim, Bin-Na Lee, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh, Hoon-Sang Chang
      Restorative Dentistry & Endodontics.2012; 37(3): 130.     CrossRef

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      Power density of light curing units through resin inlays fabricated with direct and indirect composites
      J Korean Acad Conserv Dent. 2010;35(5):353-358.   Published online September 30, 2010
      DOI: https://doi.org/10.5395/JKACD.2010.35.5.353
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    Power density of light curing units through resin inlays fabricated with direct and indirect composites
    Power density of light curing units through resin inlays fabricated with direct and indirect composites

    Composition of the resin composites used in this study

    The composition of the organic matrix, filler, and filler contents was provided by the manufacturers.

    Bis-GMA, Bisphenol A diglycidyl ether dimethacrylate; UDMA, urethane dimethacrylate; Bis-EMA, Bisphenol A polyethylene glycol diether dimethacrylate; TEGDMA, triethylene glycol dimethacrylate.

    Power density (mW/cm2 ± SD) of light curing units through resin specimens of 1.5 mm thickness

    *The superscripts with the same letters are not significantly different at α= 0.05.

    Power density (mW/cm2 ± SD) of light curing units through resin specimens of 0.5 mm thickness

    *The superscripts with the same letters are not significantly different at α= 0.05.
    Table 1 Composition of the resin composites used in this study

    The composition of the organic matrix, filler, and filler contents was provided by the manufacturers.

    Bis-GMA, Bisphenol A diglycidyl ether dimethacrylate; UDMA, urethane dimethacrylate; Bis-EMA, Bisphenol A polyethylene glycol diether dimethacrylate; TEGDMA, triethylene glycol dimethacrylate.

    Table 2 Power density (mW/cm2 ± SD) of light curing units through resin specimens of 1.5 mm thickness

    *The superscripts with the same letters are not significantly different at α= 0.05.

    Table 3 Power density (mW/cm2 ± SD) of light curing units through resin specimens of 0.5 mm thickness

    *The superscripts with the same letters are not significantly different at α= 0.05.

    Table 1

    Table 2

    Table 3

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