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The proper assessment of the relation between the roots of the maxillary posterior teeth and the maxillary sinus floor represents a real concern for dental practitioners when conducting any procedure in the involved region. Many imaging techniques have been employed to assess this relation. This study aimed to (1) compare the accuracy of digital periapical radiographs with that of cone-beam computed tomography images in assessing the relationship between the maxillary molar roots and the maxillary sinus floor and (2) determine periapical radiographic features (if present) that could indicate the actual protrusion of roots into the sinus cavity.

Accuracy of intraoral digital radiography in assessing maxillary Sinus-Root relationship compared to CBCT