title: A comparison of two intraoral CCD sensor systems in terms of image quality and interobserver agreement.
abstract: OBJECTIVE
  Two intraoral CCD sensor systems were compared with respect to image quality and interobserver agreement.
  
  
  METHODS
  Forty intraoral images from each of the sensors (Trophy RVG5, Sirona Sidexis) were examined by 4 observers in terms of anatomical landmarks and general image quality. The images were divided into 2 groups--filtered and unfiltered. Kappa values for interobserver agreement were calculated for all assessed points.
  
  
  RESULTS
  The Trophy sensor showed better image quality in the filtered group, and the Sirona sensor demonstrated good image quality in the unfiltered group. Moderate to substantial interobserver agreement was achieved. The use of filters increased edge artefacts. Sensor specific artefacts in the Trophy system were observed.
authors.affiliation: University Hospital, Hamburg-Eppendorf, Department of Oral Radiology, Martinistr. 52 20246 Hamburg, Germany. dschulze@uke.uni-hamburg.de
authors.forename: D
authors.initials: D
authors.lastname: Schulze
authors.forename: U J
authors.initials: UJ
authors.lastname: Rother
authors.forename: A W
authors.initials: AW
authors.lastname: Fuhrmann
authors.forename: M
authors.initials: M
authors.lastname: Tietke
mesh_terms: D016477:Artifacts; D006801:Humans; D007091:Image Processing, Computer-Assisted; D015588:Observer Variation; D011856:Radiographic Image Enhancement / Q000379:methods*; D019252:Radiography, Dental, Digital / Q000295:instrumentation*; D014070:Tooth / Q000000981:diagnostic imaging; D014092:Tooth Root / Q000000981:diagnostic imaging