Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology
Oral and maxillofacial radiologyEffect of monitors on approximal caries detection in digital radiographs—standard versus precalibrated DICOM part 14 displays: An in vitro study
Section snippets
Materials and Methods
From a group of extracted teeth, 100 human teeth (40 premolars and 60 molars), whose approximal surfaces on visual inspection were intact or had small carious lesions of varying sizes, were selected. One-half of the selected teeth were visually healthy, and one-half had carious lesions of different extensions on the approximal surfaces. The teeth were mounted in 30 blocks made of President putty (Coltène Whaledent, Cuyahoga Falls, OH), 3 or 4 teeth in each block. Radiographs were acquired in a
Results
The histologic evaluations showed that 100 surfaces were sound and that 100 surfaces had a carious lesion. The 2 observers disagreed in 31% of the cases. Disagreement was confined to grades 0 and 1. Table II presents differences in carious lesion depth.
Data from the 7 observers were pooled in the ROC curve for each radiograph. Table III presents mean areas under the ROC curves for each monitor according to lesion grade. Differences in diagnostic accuracy between the monitors regarding
Discussion
This study found no difference in diagnostic accuracy between the evaluated monitors regarding approximal carious lesions. All displays were calibrated or adjusted for the special task of viewing digital radiographs. Ambient light level in the evaluation room was <50 lux, as recommended by AAPM.3
The results indicate that a standard monitor, whether color or monochromatic, is suitable for diagnosing faint objects such as small carious lesions if display brightness and contrast are optimized.
References (20)
Basic principles of ROC analysis
Semin Nucl Med
(1978)- et al.
Influence of the digital image display monitor on observer performance
Dentomaxillofac Radiol
(1999) - et al.
Digital radiography in general dental practiceA field study
Dentomaxillofac Radiol
(2007) Assessment of display performance for medical imaging systems
- et al.
Effect of ambient light and monitor brightness and contrast settings on the detection of approximal caries in digital radiographsAn in vitro study
Dentomaxillofac Radiol
(2008) Contrast sensitivity of the human eye and its effects on image quality
(1999)DICOM part 14: grayscale standard display function
- et al.
Quality and quantity of dental x-ray examinationsA comparative study in a five year interval
Dentomaxillofac Radiol
(1980) Digital radiography and caries diagnosis
Dentomaxillofac Radiol
(1998)- et al.
The choice of gold standard for evaluating tests for caries diagnosis
Dentomaxillofac Radiol
(1999)
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2022, Journal of Prosthetic DentistryCitation Excerpt :Studies have also compared the diagnostic accuracy obtained with medical and nonmedical monitors for other diagnostic tasks. Isidor et al30 reported higher accuracy in detecting carious lesions when using medical monitors, while Pakkala et al31 and Hellén-Halme et al32 reported no significant differences in the accuracy of different types of screens. Future studies may clarify whether using medical or nonmedical monitors influences the detection of misfits at the implant-prosthesis interface.
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2021, Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyIs the digital radiographic detection of approximal caries lesions influenced by viewing conditions?
2020, Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyRole of ambient light in the detection of contrast elements in digital dental radiography
2018, Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyCitation Excerpt :Another crucial parameter is the display setting. When the monitor's brightness and contrast were adjusted by using standard test images from the American Association of Physicists in Medicine, Hellén-Halme et al. found no difference between the use of a standard office computer with a 19-inch LCD display and a precalibrated DICOM monitor in detecting approximal carious lesions at ambient light below 50 lux.2 Countryman et al.24 came to a similar conclusion under viewing conditions at 30 lux ambient light when they compared autocalibrating medical-grade monitors, off-the-shelf monitors, and tablet computers in the detection of artificial incipient and recurrent caries-like lesions: similar lesions did not statistically differ among the 3 types of displays.
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2018, Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyCitation Excerpt :However, a systematic review of the medical literature on the diagnostic accuracy and reliability of radiologic interpretation of images displayed on tablet computers compared with DICOM-calibrated control displays did not identify any statistically significant differences between displays.3 Most of the reviewed studies in dental imaging had similar findings—that is, there was no significant difference between monitors when viewing the same images of primary enamel caries,4,5,7,21,22 endodontic working length measurements,11 or vertical root fractures.8 However, the study by Araki et al.2 found that a tablet had significantly lower accuracy than both a medical-grade monitor and a standardized off-the-shelf monitor.
Assessment of the diagnostic quality of the digital display monitors at the dental clinics of a university hospital
2018, Informatics in Medicine UnlockedCitation Excerpt :Dental radiographs need to be quite dark with a good contrast to provide an optimal basis for caries diagnosis [12]. Low luminance response values influences the contrast of the image and radiographs appear lighter which results in loss of valuable information in the digital image and can produce less accurate caries ratings [17,19]. Therefore, luminance response appears to be a very important parameter in dental radiography and must be taken into account as a technical factor for monitor selection [2,16,18,20].