title: Accuracy of digital and film panoramic radiographs for assessment of position and morphology of mandibular third molars and prevalence of dental anomalies and pathologies.
abstract: OBJECTIVE
  To compare the accuracy of digital and film panoramic radiographs for determining (1) the position and morphology of mandibular third molars before surgical removal and (2) the prevalence of dental anomalies and pathologies.
  
  
  METHODS
  Three hundred and eighty-eight third mandibular molars were available for examination. Position and morphology of third molars observed on film radiographs and on digital panoramic images from five systems (DenOptix, DigiDent, Digora, Dimax2 and Orthophos Plus) were recorded by two observers and were compared with surgeons' findings at the time of the operation (gold standard). One observer further recorded the prevalence of dental anomalies and pathologies on both imaging modalities.
  
  
  RESULTS
  Few differences were found between the digital and film-based panoramic systems in the assessment of accuracy of position and morphology of mandibular third molars. The prevalence of dental anomalies and pathologies determined with the two modalities was roughly similar.
  
  
  CONCLUSIONS
  The five digital panoramic systems evaluated in this study were equally as useful for third molar treatment planning and diagnosis of dental anomalies and pathologies as conventional film-based panoramic radiographs.
authors.affiliation: Department of Oral Radiology, Royal Dental College, Faculty of Health Sciences, University of Aarhus, Denmark. isb@odont.au.dk
authors.forename: I S
authors.initials: IS
authors.lastname: Benediktsdottir
authors.forename: H
authors.initials: H
authors.lastname: Hintze
authors.forename: J K
authors.initials: JK
authors.lastname: Petersen
authors.forename: A
authors.initials: A
authors.lastname: Wenzel
mesh_terms: D000293:Adolescent; D000328:Adult; D003731:Dental Caries / Q000000981:diagnostic imaging; D003795:Dental Sac / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007570:Jaw Cysts / Q000000981:diagnostic imaging; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging*; D008964:Molar, Third / Q000000981:diagnostic imaging*; D015588:Observer Variation; D019252:Radiography, Dental, Digital; D011862:Radiography, Panoramic; D014071:Tooth Abnormalities / Q000000981:diagnostic imaging; D014092:Tooth Root / Q000000981:diagnostic imaging; D014095:Tooth, Impacted / Q000000981:diagnostic imaging*