title: LCD and CRT display of storage phosphor plate and limited cone beam computed tomography images for the evaluation of root canal fillings.
abstract: The aim was to compare quality of liquid crystal display (LCD) and high resolution cathode ray tube (CRT) screens for the evaluation of length and homogeneity of root canal fillings in storage phosphor plate (SPP) and limited cone beam computed tomography (LCBCT) images. Endodontic treatment was performed to 17 extracted permanent lower incisor teeth. Images of each tooth positioned in a dried mandible were obtained with Digora SPP and Accu-I-Tomo LCBCT systems. Six observers scored the quality of all images on CRT and LCD screens. Results were compared using McNemar's and Cochran's Q tests (p < 0.05). The differences among the LCBCT and SPP images were determined by binomial test. No significant difference was found between ratings of CRT and LCD displays (p > 0.05). Agreement among observers' scores was higher with CRT display. Within the limits of this ex vivo study, differences between LCD and CRT monitors for the evaluation of root canal fillings are clinically insignificant independent on whether conventional radiographs, captured by means of image plates, or cone beam images are being displayed.
authors.affiliation: Department of Oral Diagnosis and Radiology, School of Dentistry, Ege University, Izmir, Turkey. bgunb@yahoo.com
authors.forename: B Güniz
authors.initials: BG
authors.lastname: Baksi
authors.forename: Elif
authors.initials: E
authors.lastname: Soğur
authors.forename: Hans-Göran
authors.initials: HG
authors.lastname: Gröndahl
mesh_terms: D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003626:Data Display; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging; D004708:Endodontics; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D050866:Liquid Crystals; D008838:Microcomputers; D015588:Observer Variation; D011856:Radiographic Image Enhancement / Q000379:methods; D019252:Radiography, Dental, Digital / Q000379:methods*; D011871:Radiology; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012389:Root Canal Obturation; D018915:Root Canal Preparation / Q000379:methods; D013499:Surface Properties; D019227:Tooth Apex / Q000000981:diagnostic imaging
chemical_list: D012387:Root Canal Filling Materials