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Imaging Factors Impacting on Accuracy and Radiation Dose in 3D Printing

Journal of Maxillofacial and Oral Surgery volume 17, pages 582–587 (2018)Cite this article

Abstract

Objectives

To compare reconstructed area and surface roughness of 3D models acquired using nine image acquisition protocols. Radiation dose was also compared among acquisition protocols.

Methods

A dry craniofacial specimen was scanned using three CT devices (a cone beam CT, a 16-channel fan beam CT, and a 64-channel fan beam CT), with three different acquisition protocols each. Nine 3D models were manufactured using polylactic acid. Surface roughness and reconstructed area were determined for each 3D model. The radiation dose during acquisitions was measured using lithium crystals. ANOVA was used to compare the data among the 3D models. Linear function optimization techniques based on stochastic variables were applied to identify the most suitable protocol for use.

Results

For surface roughness, statistically significant differences were observed among all 3D models and the specimen. For reconstructed area, CBCT and one CT-16 channel protocols originated 3D models statistically significant different from the specimen. Higher radiation doses were observed with fan beam CT acquisitions.

Conclusions

All three CT devices were suitable for 3D printing when used at full resolution. The highest reconstruct area vs. radiation dose ratio was found for 64-channel CT devices.

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Author information

Affiliations

  1. Department of Maxillofacial Prosthesis, School of Dentistry, Universidad de la Republica, Las Heras 1925, Montevideo, Uruguay

    Jorge Javier de Lima Moreno & Roberto Soler

  2. Department of Stomatology, School of Dentistry, Federal University of Santa Maria, Santa Maria, Brazil

    Gabriela Salatino Liedke

  3. Department of Surgery and Orthopedics, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil

    Heloisa Emília Dias da Silveira & Heraldo Luis Dias da Silveira

Authors
  1. Jorge Javier de Lima Moreno
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  2. Gabriela Salatino Liedke
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  3. Roberto Soler
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  4. Heloisa Emília Dias da Silveira
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  5. Heraldo Luis Dias da Silveira
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Corresponding author

Correspondence to Jorge Javier de Lima Moreno.

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The authors declare that they have no conflict of interest.

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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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de Lima Moreno, J.J., Liedke, G.S., Soler, R. et al. Imaging Factors Impacting on Accuracy and Radiation Dose in 3D Printing. J. Maxillofac. Oral Surg. 17, 582–587 (2018). https://doi.org/10.1007/s12663-018-1098-z

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  • DOI: https://doi.org/10.1007/s12663-018-1098-z

Keywords

  • Multidetector computed tomography
  • Cone beam computed tomography
  • Radiation dosage
  • 3D printing