Effect of image compression on the radiographic diagnosis of external root resorptions

Vania Regina Camargo FONTANELLA, Vinicius RAAB, Elaine BALDISSERA, Célia Regina Winck MAHL, Carlos Eduardo Winck MAHL, André WILTGEN


To investigate the effect of JPEG image compression on the diagnostic accuracy of external root resorptions, 33 central upper incisors were mounted in a maxilla simulator artifact and radiographed. Sequential external root resorptions of different sizes were simulated on the proximal surfaces of each tooth with 1⁄4, 1⁄2, 1, 2 and 3 round burs. The teeth were radiographed before and after each cavity was drilled. Each radiographic image was digitized, digitally copied and stored as JPEG image files at 12, 10, 8 and 6 compression levels. The images were randomly presented to six radiologists that ranked resorptions on a 5-point confidence scale. The JPEG 10 compression level reduced file size in about


Root resorption; Diagnostic imaging; Dental digital radiography

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DOI: https://doi.org/10.22456/2177-0018.7396

Licença Creative Commons

e-ISSN 2177-0018 / ISSN 0566-1854.

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