Global ETD Search

1	A Comparison of five radiographic systems to D-speed film in the detection of artificial bone lesions Hadley, David Lloyd 01 January 2008 (has links) The purpose of this study was to compare three direct digital sensors (Kodak 6100, Schick CDR, and Dexis PerfectSize), a phosphor plate system (OpTime), and F-speed film to standard D-speed film in the detection of artificial bone lesions prepared in mandible bone sections. Multiple artificial bone lesions were prepared at varying depths in the cortical bone. Specimens were imaged with six different radiographic systems. Radiographs were randomly presented to nine different observers. A logistic regression analysis indicated that the ability of the different radiographic systems to detect the bone lesions was significantly different at the mean percentage of cortical bone remaining. The Kodak filtered, Schick filtered, OpTime unfiltered, Schick unfiltered, and Dexis filtered images were significantly better at lesion detection compared to D-speed film. Also, all filtered digital images were significantly better at lesion detection than D-speed film. comparison radiographic systems D-speed film intraoral detection artificial simulated bone lesions cortical filtered unfiltered dexis schick kodak optime Dentistry Endodontics and Endodontology Medicine and Health Sciences