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P 48<br />

Title<br />

COMPARISON OF FILM AND DIGITAL SENSOR IN PROXIMAL CARIES DETECTION<br />

Authors<br />

S. MOHTAVIPOuR 1 , A. JAVADzADEH 1 , F. SHAHSAVARI 2 , S. MOHTAVIPOuR 3<br />

Affiliations<br />

1 Guilan dental school-Department of maxillofacial radiology, R<strong>as</strong>ht, IRAN, 2 Islamic Azad<br />

dental school-Department of pathology, Tehran, IRAN, 3 Shahid Beheshti Dental school-Department<br />

of pediatric dentistry, Tehran, IRAN<br />

Body<br />

Objective: Various systems for intraoral digital radiography have been <strong>available</strong> <strong>as</strong> an alternative<br />

to film–b<strong>as</strong>ed radiography. In consideration of several advantages of digital radiography<br />

such <strong>as</strong> less paitient absorbed dose, manipulation of image quality and elimination of processing,<br />

the purpose of this study w<strong>as</strong> comparison of conventional film and digital radiography in<br />

the proximal caries diagnosis.<br />

Method: In this study, 40 extracted premolar teeth were selected and mounted in acrylic<br />

blocks. The teeth were radiographed using Fspeed film and digital sensor(COMS). Two observers<br />

evaluated interproximal surfaces for detection of presense and extent of caries. True caries<br />

depth w<strong>as</strong> determined by histological examination. The diagnosis accuracy of each radiographic<br />

system <strong>as</strong>sessed by means of receiver operating characteristic (Roc)curve analysis.<br />

Results: T<strong>here</strong> w<strong>as</strong> no significant differences between two imaging modalities. The AZ values<br />

in c<strong>as</strong>es without caries and dentinal caries were greater than caries in the level of enamel and<br />

DEJ. The differences among observers also were not statistically significant.<br />

Conclusion: Both imaging modalities were comparable in detection of approximal carious<br />

lesions.<br />

Keywords<br />

digital radiography, carious lesion, radiography<br />

POSTerS<br />

163

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