title: Comparative adoption of cone beam computed tomography and panoramic radiography machines across Australia.
abstract: The aim of the present study was to assess the current adoption of cone beam computed tomography (CBCT) and panoramic radiography (PR) machines across Australia.
  
  
  
  Information regarding registered CBCT and PR machines was obtained from radiation regulators across Australia. The number of X-ray machines was correlated with the population size, the number of dentists, and the gross state product (GSP) per capita, to determine the best fitting regression model(s).
  
  
  
  In 2014, there were 232 CBCT and 1681 PR machines registered in Australia. Based on absolute counts, Queensland had the largest number of CBCT and PR machines whereas the Northern Territory had the smallest number. However, when based on accessibility in terms of the population size and the number of dentists, the Australian Capital Territory had the most CBCT machines and Western Australia had the most PR machines. The number of X-ray machines correlated strongly with both the population size and the number of dentists, but not with the GSP per capita.
  
  
  
  In 2014, the ratio of PR to CBCT machines was approximately 7:1. Projected increases in either the population size or the number of dentists could positively impact on the adoption of PR and CBCT machines in Australia.
authors.affiliation: School of Dentistry, The University of Queensland, Herston, Queensland, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Zhang
authors.affiliation: Health Protection Branch, Queensland Department of Health, Herston, Queensland, Australia.
authors.forename: S
authors.initials: S
authors.lastname: Critchley
authors.affiliation: School of Dentistry, The University of Queensland, Herston, Queensland, Australia.
authors.forename: P A
authors.initials: PA
authors.lastname: Monsour
mesh_terms: D001315:Australia; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data; D006801:Humans; D019239:Practice Patterns, Dentists'; D011862:Radiography, Panoramic / Q000706:statistics & numerical data; D014076:Tooth Diseases / Q000000981:diagnostic imaging*
keywords: X-ray machines; cone beam computed tomography; correlative analysis; extraoral radiography; panoramic radiography