title: Comparison of conventional film with different digital and digitally filtered images in the detection of simulated internal resorption cavities--an ex vivo study in human cadaver jaws.
abstract: OBJECTIVE
  To determine observers' ability to detect experimentally induced simulated internal resorption cavities using conventional film, digital images and digitally filtered images.
  
  
  METHODS
  In the coronal plane, 11 single-rooted teeth with radiographically visible pulps were split in half. Four artificial internal resorptions were simulated in each tooth at the coronal, cervical, mid-root, and apical locations of the buccal/labial wall. Conventional and digital radiographs were taken from 3 different views in 4 steps. Three observers examined conventional, digital, and digitally filtered images for the presence of resorption cavities. Data were statistically analyzed using analysis of variance. Pair-wise comparison between receptors, location, and size were made by Tukey post hoc test.
  
  
  RESULTS
  One digital system produced a significantly lower proportion of correct readings, with no significant difference between other imaging types (P < .001). In the apical region, internal resorption was the most difficult to detect. The cervical region had the highest proportion of correct readings (P < .001). False-positive readings were higher in the apical and mid-root locations (P < .001). Defect size increased detection ability. Interaction was significant between receptor and size and between size and location (P < .001).
  
  
  CONCLUSIONS
  All systems, except PSP, produced similar results in detecting simulated internal resorption.
authors.affiliation: Department of Oral Pathology and Oral Medicine, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Israel. dtkivo@yahoo.com
authors.forename: Kivanç
authors.initials: K
authors.lastname: Kamburoğlu
authors.forename: Silvina Friedlander
authors.initials: SF
authors.lastname: Barenboim
authors.forename: Israel
authors.initials: I
authors.lastname: Kaffe
mesh_terms: D000704:Analysis of Variance; D001641:Bicuspid / Q000000981:diagnostic imaging; D002102:Cadaver; D006801:Humans; D007568:Jaw / Q000000981:diagnostic imaging*; D015588:Observer Variation; D011861:Radiography, Dental / Q000379:methods*; D019252:Radiography, Dental, Digital / Q000379:methods; D012391:Root Resorption / Q000000981:diagnostic imaging*; D018709:Statistics, Nonparametric; D019237:Tooth Cervix / Q000000981:diagnostic imaging; D014092:Tooth Root / Q000000981:diagnostic imaging*; D014962:X-Ray Film