title: Detection of cavitated carious lesions in approximal tooth surfaces by ultrasonic caries detector.
abstract: OBJECTIVE
  A new diagnostic method for detecting cavitated carious lesions in approximal surfaces with the aid of an ultrasonic caries detector (UCD) was tested for clinical use. The objective of this study was to evaluate the efficacy and clinical performance of the UCD system and to compare it with bite-wing radiography by using direct visual inspection during restoration preparation as a validation method.
  
  
  METHODS
  One hundred ninety-seven directly inspected approximal sites, 95 as cavitated carious lesions and 102 as intact sites, of adults 22 to 45 years of age were examined by UCD and radiography.
  
  
  RESULTS
  Ultrasonic caries detector sensitivity was 0.82 compared with 0.75 for bite-wing radiographs when the threshold was determined as radiolucency in inner enamel and dentin, and 0.49 when the threshold of radiolucency was in dentin. The specificity of UCD was 0.75 versus 0.9 for radiographs.
  
  
  CONCLUSIONS
  The UCD exhibited a higher sensitivity than the radiographs but a lower specificity. This study presents a new diagnostic tool that can reduce patient exposure to ionizing radiation and improve caries detection.
authors.affiliation: Department of Oral Rehabilitation Dentistry, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel. matalons@post.tau.ac.il
authors.forename: Shlomo
authors.initials: S
authors.lastname: Matalon
authors.forename: Osnat
authors.initials: O
authors.lastname: Feuerstein
authors.forename: Shlomo
authors.initials: S
authors.lastname: Calderon
authors.forename: Avraham
authors.initials: A
authors.lastname: Mittleman
authors.forename: Israel
authors.initials: I
authors.lastname: Kaffe
mesh_terms: D000328:Adult; D003731:Dental Caries / Q000000981:diagnostic imaging*; D003732:Dental Caries Activity Tests / Q000295:instrumentation*; D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation; D006801:Humans; D008875:Middle Aged; D015588:Observer Variation; D016300:Radiography, Bitewing; D012680:Sensitivity and Specificity; D016037:Single-Blind Method; D014463:Ultrasonography