title: Diagnostic accuracy of Digora Optime storage phosphor plates for proximal subsurface demineralization: effect of different exposure times.
abstract: OBJECTIVE
  The aim of this study was to compare the diagnostic accuracy of F-speed film and storage phosphor plate (SPP) exposed with different exposure times for the detection of artificial enamel subsurface demineralization.
  
  
  METHODS
  Standard enamel windows of extracted premolars were exposed to a demineralizing solution. All teeth were radiographed before and after acid application with F-speed films and SPPs. Films were exposed for 0.25 seconds and SPPs were exposed using 4 exposure times. Receiver operating characteristic analysis was used for diagnostic accuracy (A(z)).
  
  
  RESULTS
  Significant differences were obtained among A(z)s of 0.08- versus 0.12-seconds and 0.10- versus 0.12-second exposed SPPs (P < .05). A(z)s of films were higher than the SPPs exposed with 0.08, 0.10, and 0.12 seconds (P < .05). No difference was found between the A(z)s of the 2 systems when SPPs were exposed for 0.16 seconds (P > .05).
  
  
  CONCLUSIONS
  Diagnostic accuracy of films and SPPs was not impaired when exposure time was 36% reduced for the latter; however, diagnosis was impaired when reduced 52%.
authors.affiliation: Department of Oral and Maxillofacial Radiology, School of Dentistry, Ege University, Izmir, Turkey. onemerinc@hotmail.com
authors.forename: Erinç
authors.initials: E
authors.lastname: Önem
authors.forename: B Güniz
authors.initials: BG
authors.lastname: Baksı
authors.forename: B Hakan
authors.initials: BH
authors.lastname: Şen
authors.forename: Ali
authors.initials: A
authors.lastname: Mert
mesh_terms: D003743:Dental Enamel; D006801:Humans; D008903:Minerals / Q000737:chemistry*; D012372:ROC Curve; D019252:Radiography, Dental, Digital / Q000295:instrumentation*; D012680:Sensitivity and Specificity
chemical_list: D008903:Minerals