E-ISSN 2548-0839
European Endodontic Journal Detection of Simulated Periapical Lesion in Intraoral Digital Radiography with Different Brightness and Contrast []
. 2019; 4(3): 133-138 | DOI: 10.14744/eej.2019.46036

Detection of Simulated Periapical Lesion in Intraoral Digital Radiography with Different Brightness and Contrast

Hugo GaÍta-Araujo1, Eduarda Nascimento1, Danieli Brasil1, Amanda Farias Gomes1, Deborah Freitas1, Christiano Oliveira-Santos2
1Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas UNICAMP, Piracicaba Sao Paulo, Brazil
2Department of Stomatology, Public Oral Health and Forensic Dentistry, Division of Oral Radiology, School of Dentistry of Ribeirao Preto, University of Sao Paulo USP, Sao Paulo, Brazil

Objective: To assess the detection of simulated periapical lesions in digital intraoral radiography with different levels of brightness and contrast combinations, and to investigate the observersí preference of image quality for this diagnostic task.
Methods: Digital radiographs were acquired prior to periapical lesion simulation and after each one of four defects enlargement. Original images were adjusted in 4 brightness and contrast combinations. Five observers evaluated the images according to the presence of periapical lesion on a 5-point scale. In a second moment, the observers ordinated the images subjectively, according to quality, from the best to the worst to detect the bone defect. The area under the receiver operating characteristic curve was calculated for the diagnostic values and compared by two-way ANOVA. The significance level was set at 5% (P<0.05).
Results: No differences were found between the diagnostic values of the five combinations of brightness and contrast (P>0.05). The overall results showed low values of area under the Receiver Operating Characteristic (ROC) curve and sensitivity of the periapical radiography in the detection of periapical lesions of sizes from 1 to 3, which rose substantially in size 4. For image quality, combinations with the lowest brightness and highest contrast were preferred by the observers in 58% of the cases.
Conclusion: Brightness and contrast adjustments do not influence the detection of simulated periapical lesions in digital intraoral radiography. Lower brightness and higher contrast images were preferred for this diagnostic task.

Keywords: Digital radiography, dental, diagnostic imaging, endodontic diagnosis, imaging, periapical lesions

Hugo GaÍta-Araujo, Eduarda Nascimento, Danieli Brasil, Amanda Farias Gomes, Deborah Freitas, Christiano Oliveira-Santos. Detection of Simulated Periapical Lesion in Intraoral Digital Radiography with Different Brightness and Contrast. . 2019; 4(3): 133-138

Corresponding Author: Hugo GaÍta-Araujo
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