title: Metal artifacts from posterior mandibular implants as seen in CBCT.
abstract: OBJECTIVE
  Metal artifacts from dental implants have not been clarified in cone-beam computed tomography (CBCT) images in previous studies. Hence, only mesiodistal metal artifacts from dental implants in the posterior mandibular region were assessed using CBCT.
  
  
  METHODS
  Twenty-two patients with a total of 61 dental implants in posterior mandibular sites were enrolled. The pixel values surrounding dental implants were measured using CBCT and rotational panoramic radiography, and then the means were calculated.
  
  
  RESULTS
  The mean pixel values between dental implants, between dental implants and neighboring teeth, and posterior to dental implants were significantly lower than between neighboring teeth in CBCT. In addition, the mean pixel value between dental implants did not significantly differ from that between neighboring teeth in rotational panoramic radiography.
  
  
  CONCLUSIONS
  It was concluded that mesiodistal metal artifacts surrounding dental implants are demonstrated on CBCT.
authors: Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan. mune@dpc.aichi-gakuin.ac.jp
authors: Munetaka
authors: M
authors: Naitoh
authors: Kiyonobu
authors: K
authors: Saburi
authors: Kenichi
authors: K
authors: Gotoh
authors: Kenichi
authors: K
authors: Kurita
authors: Eiichiro
authors: E
authors: Ariji
mesh_terms: D000328:Adult; D000368:Aged; D016477:Artifacts; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003722:Dental Alloys / Q000528:radiation effects*; D017267:Dental Prosthesis Design; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011829:Radiation Dosage; D019252:Radiography, Dental, Digital / Q000379:methods; D011862:Radiography, Panoramic / Q000379:methods; D014070:Tooth / Q000000981:diagnostic imaging; D055815:Young Adult
chemical_list: D003722:Dental Alloys