ABSTRACT
The aim of this study was to determine diagnostic performance of a storage phosphor plate system Digora Optime (Soredex, Helsinki, Finland) with two types of LCD monitor in the detection of artificial caries when compared to Ultraspeed (D), Ektaspeed Plus (E), and Insight (F) radiographic films. Seventy extracted human molars-with artificial caries-were radiographed under identical standardized conditions using (1) a storage phosphor plate system Digora (Soredex, Helsinki, Finland), (2) Insight, (3) Ektaspeed Plus, and (4) Ultraspeed (Carestream Health Inc, Rochester, NY). All digital images and radiographs were examined by three observers for the presence or absence of artificial caries using a five-point confidence scale. Digital images were evaluated both on a LCD computer monitor (Philips 170S, Holland) and medical monitor-3 megapixel monochrome display (Me355i2, Totoku, Tokyo)-with brightness and contrast enhancement. Observer responses were evaluated using ROC analysis and other measurements for diagnostic accuracy. Storage phosphor images with medical monitor demonstrated higher mean A (z) values (0.70 +/- 0.08) than digital images with computer monitor and conventional films. Storage phosphor images with medical monitor presented the highest score, 0.97, 0.90, 0.94, for each observer, respectively. Also, true positive observations (0.82) and positive likelihood ratios (2.71) were higher in enhanced storage phosphor images with medical monitor. Caries detection of mechanically created lesions by experienced radiologists is roughly comparable when examining D-speed film images and Digora images on both the computer and medical LCD monitors, and appears to be poorer on E- and F-speed film images.
Subject(s)
Computer Terminals , Dental Caries/diagnostic imaging , Radiographic Image Enhancement/methods , Radiography, Dental, Digital/methods , Humans , Observer Variation , ROC Curve , Reproducibility of ResultsABSTRACT
OBJECTIVES: The aim of the study is to investigate the prevalence of the dental patients who had a history of hepatitis. STUDY DESIGN: A total of 13.527 records of patients who were examined between October 1, 2002 and October 1, 2004 were reviewed retrospectively. The medical histories of patients were taken before routine clinical and radiographic examination. A dental software program was used for the collection of data. The chi-square test was utilized to evaluate correlations between different parameters. RESULTS: The percentage of the patients who had a medical history of hepatitis was 7.9% (n=1065). Within the total patients; history of hepatitis A was found as 3.2% (n=438), hepatitis B was 2.3% (n=308), hepatitis C was 0.1% (n=16). The frequency of the patients who were hepatitis B carriers was 0.8% (n=113) and 17% (n=181) of patients did not know which type of hepatitis they had suffered from. CONCLUSIONS: Because dentists are particularly at risk for contacting hepatitis, a strict sterilization procedure is mandatory to prevent the transmission.
Subject(s)
Dental Care for Chronically Ill , Hepatitis, Viral, Human/prevention & control , Infection Control, Dental , Infectious Disease Transmission, Patient-to-Professional/prevention & control , Adolescent , Adult , Aged , Aged, 80 and over , Dental Facilities , Female , Hepatitis, Viral, Human/epidemiology , Hepatitis, Viral, Human/transmission , Humans , Male , Medical History Taking , Middle Aged , Prevalence , Sterilization , Turkey/epidemiologyABSTRACT
Objectives: The aim of the study is to investigate the prevalence of the dental patients who had a history of hepatitis.Study design: A total of 13.527 records of patients who were examined between October 1, 2002 and October 1, 2004 were reviewed retrospectively. The medical histories of patients were taken before routine clinical and radiographic examination. A dental software program was used for the collection of data. The chi-square test was utilized to evaluate correlations between different parameters.Results: The percentage of the patients who had a medical history of hepatitis was 7.9% (n=1065). Within the total patients; history of hepatitis A was found as 3.2% (n=438), hepatitis B was 2.3% (n=308), hepatitis C was 0.1% (n=16). The frequencyof the patients who were hepatitis B carriers was 0.8% (n=113) and 17% (n=181) of patients did not know which type of hepatitis they had suffered from.Conclusions: Because dentists are particularly at risk for contacting hepatitis, a strict sterilization procedure is mandatory to prevent the transmission
