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Journal of Maxillofacial and Oral Surgery

, Volume 17, Issue 4, pp 582–587 | Cite as

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

  • Jorge Javier de Lima Moreno
  • Gabriela Salatino Liedke
  • Roberto Soler
  • Heloisa Emília Dias da Silveira
  • Heraldo Luis Dias da Silveira
Original Article
  • 35 Downloads

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.

Keywords

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

Notes

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical Approval

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

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Copyright information

© The Association of Oral and Maxillofacial Surgeons of India 2018

Authors and Affiliations

  • Jorge Javier de Lima Moreno
    • 1
  • Gabriela Salatino Liedke
    • 2
  • Roberto Soler
    • 1
  • Heloisa Emília Dias da Silveira
    • 3
  • Heraldo Luis Dias da Silveira
    • 3
  1. 1.Department of Maxillofacial Prosthesis, School of DentistryUniversidad de la RepublicaMontevideoUruguay
  2. 2.Department of Stomatology, School of DentistryFederal University of Santa MariaSanta MariaBrazil
  3. 3.Department of Surgery and Orthopedics, School of DentistryFederal University of Rio Grande do SulPorto AlegreBrazil

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