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J Dent Res Dent Clin Dent Prospects. 2012;6(2): 49-53.
doi: 10.5681/joddd.2012.011
PMID: 22991636
PMCID: PMC3445314
  Abstract View: 1026
  PDF Download: 1148

Original Article

Beam Hardening Artifacts: Comparison between Two Cone Beam Computed Tomography Scanners

Farzad Esmaeili 1, Masume Johari 1*, Pezhman Haddadi 2, Mehdi Vatankhah 3

1 Assistant Professor, Department of Oral & Maxillofacial Radiology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
2 Post-graduate Student, Department of Oral & Maxillofacial Radiology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
3 Department of Oral & Maxillofacial Radiology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
*Corresponding Author: *Corresponding Author; , Email: dr_masume@yahoo.com

Abstract

Background and aims. At present, cone beam computed tomography (CBCT) has become a substitute for computed tomography (CT) in dental procedures. The metallic materials used in dentistry can produce artifacts due to the beam hardening phenomenon. These artifacts decrease the quality of images. In the present study, the number of artifacts as a result of beam hardening in the images of dental implants was compared between two NewTom VG and Planmeca Promax 3D Max CBCT machines.

Materials and methods. An implant drilling model was used in the present study. The implants (Dentis) were placed in the canine, premolar and molar areas. Scanning procedures were carried out by two CBCT machines. The corresponding sections (coronal and axial) of the implants were evaluated by two radiologists. The number of artifacts in each image was determined using the scale provided. Mann-Whitney U test was used for two-by-two comparisons at a significance level of P<0.05.

Results. There were statistically significant differences in beam hardening artifacts in axial and coronal sections between the two x-ray machines (P<0.001), with a higher quality in the images produced by the NewTom VG.

Conclusion. Given the higher quality of the images produced by the NewTom VG x-ray machine, it is recommended for imaging of patients with extensive restorations, multiple prostheses or previous implant treatments.

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Submitted: 12 Jun 2011
Accepted: 11 Mar 2012
ePublished: 26 Jun 2017
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