Beam Hardening Artifacts: Comparison between Two Cone Beam Computed Tomography Scanners
- Resource Type
- article
- Authors
- Farzad Esmaeili; Masume Johari; Pezhman Haddadi; Mehdi Vatankhah
- Source
- Journal of Dental Research, Dental Clinics, Dental Prospects, Vol 6, Iss 2, Pp 49-53 (2012)
- Subject
- Artifacts
beam hardening
cone beam computed tomography
Dentistry
RK1-715
- Language
- English
- ISSN
- 2008-210X
2008-2118
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