title: Reliability of Logicon caries detector in the detection and depth assessment of dental caries: an in-vitro study.
abstract: BACKGROUND
  Digital radiography has so far not resulted in improved rates of proximal caries detection. Historically, automated caries detection tools have been largely academic. Opinions regarding the performance of the only such commercially available tool, viz., Logicon caries Detector (LCD) have been equivocal. This study was conducted to evaluate the reliability of LCD in the detection and depth assessment of proximal caries.
  
  
  METHODS
  Digital images were obtained of 100 proximal tooth surfaces using the Kodak RVG 5000 sensor and analyzed by three observers. The images were then analyzed by the principal investigator using the LCD software. The teeth were then sectioned and magnified photographic images were obtained which were taken as the gold standard. All the grades were entered in proformas and the data were statistically analyzed using the chi-square test. Five parameters of reliability were calculated.
  
  
  RESULTS
  The sensitivity, specificity, positive predictive value, negative predictive value, and overall accuracy of LCD for the grade No caries were 33, 96, 73, 82, and 81%, respectively; for the grade Enamel caries were 5, 97, 33, 80, and 79%, respectively; and for the grade Dentin caries were 100, 96, 50, 100, and 96%, respectively.
  
  
  CONCLUSIONS
  In conclusion, LCD appears to be more reliable in ruling out (both enamel and dentin) caries than in detecting caries.
authors: Department of Oral Medicine and Radiology, Sinhgad Dental College and Hospital, Pune, India. dr.behere@gmail.com
authors: Rohit R
authors: RR
authors: Behere
authors: Shailesh M
authors: SM
authors: Lele
mesh_terms: D001641:Bicuspid / Q000000981:diagnostic imaging / Q000473:pathology; D003731:Dental Caries / Q000000981:diagnostic imaging* / Q000473:pathology; D003743:Dental Enamel / Q000000981:diagnostic imaging / Q000473:pathology; D003804:Dentin / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000592:standards / Q000706:statistics & numerical data; D008963:Molar / Q000000981:diagnostic imaging / Q000473:pathology; D015588:Observer Variation; D023861:Photography, Dental; D011237:Predictive Value of Tests; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000592:standards; D019252:Radiography, Dental, Digital / Q000592:standards* / Q000706:statistics & numerical data; D012680:Sensitivity and Specificity; D012986:Software Validation