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Transmission of light in the visible spectrum (400–700 nm) and blue spectrum (360–540 nm) through CAD/CAM polymers

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Abstract

Objectives

CAD/CAM-fabricated long-term temporary restorations from high-density polymers can be applied for a wide range of indications. Milled from monolithic, mono-colored polymer blocks, the translucency of the material plays an important role for an esthetically acceptable result. The aim of this study was to compare the transmittance through visible light and blue light of CAD CAM polymers to a glass-ceramic material of the same color.

Materials and methods

Ambarino High-Class (AM), Telio-CAD (TC), Zenotec PMMA (ZT), Cercon base PMMA (CB), CAD Temp (CT), Artbloc Temp (AT), Polycon ae (PS), New Outline CAD (NC), QUATTRO DISK Eco PMMA (GQ), Lava Ultimate (LU), and Paradigm MZ 100 (PA) were employed in this study using the feldspathic glass-ceramic Vita Mark II (MK) as control group. Using a spectrophotometer, the overall light transmittance was measured for each material (n = 40) and was calculated as the integration (t c (λ) dλ [10-5]) of all t c values for the wavelengths of blue light (360–540 nm). Results were compared to previous data of the authors for visible light (400 to 700 nm).

Results

Wilcoxon test showed significant differences between the light transmittance of visible and blue light for all materials.

Conclusion

CAD/CAM polymers showed different translucency for blue and visible light. This means clinicians may not conclude from the visible translucency of a material to its permeability for blue light. This influences considerations regarding light curing.

Clinical relevance

CAD/CAM polymers need to be luted adhesively; therefore, clinicians should be aware about the amount of blue light passing through a restoration.

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Author information

Authors and Affiliations

  1. Department of Prosthodontics, Dental School of the Ludwig-Maximilian University of Munich, Goethestraße 70, 80336, Munich, Germany

    Jan-Frederik Güth, Ana Elisa Colle Kauling & Michael Stimmelmayr

  2. Comprehensive Dental Care, Oral Implant Center, Niigata Hospital, The Nippon Dental University, 1-8, Hamaura-cho, Chuo-ku, Niigata, 951-8580, Japan

    Kazuhiko Ueda

  3. Department of Prosthodontics, Dental School of Berlin, Charite, Berlin, Germany

    Beuer Florian

Authors
  1. Jan-Frederik Güth
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  2. Ana Elisa Colle Kauling
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  3. Kazuhiko Ueda
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  4. Beuer Florian
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  5. Michael Stimmelmayr
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Corresponding author

Correspondence to Jan-Frederik Güth.

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All authors declare that they have no competing interests.

Funding

The research was supported by the Department of Prosthetic Dentistry, Ludwig Maximilian University Munich, Germany.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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The manuscript does not contain clinical studies or patient data.

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Güth, JF., Kauling, A.E.C., Ueda, K. et al. Transmission of light in the visible spectrum (400–700 nm) and blue spectrum (360–540 nm) through CAD/CAM polymers. Clin Oral Invest 20, 2501–2506 (2016). https://doi.org/10.1007/s00784-016-1755-x

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  • DOI: https://doi.org/10.1007/s00784-016-1755-x

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