Dentomaxillofacial Radiology, Vol 20, Issue 1 40-42, Copyright © 1991 by British Institute of Radiology

ARTICLES

A comparison of panoramic radiography with computed tomography in the planning of implant surgery

H. Tal and O. Moses
Department of Periodontology, Tel Aviv University, Israel.

The accuracy of panoramic radiography and computed tomography (CT) in the evaluation of depth of the mandible at recipient implant sites was compared by measuring the distance between the edentulous bony crest and the superior border of the inferior alveolar canal in a group of ten patients. Distortion was calculated using the metal ball technique for the panoramic radiographs and the computer scale for the CT scans. The precise distance between the bony crest and inferior alveolar canal was determined from postoperative radiographs from the known length of the implants. It was found that although CT scans are more precise, panoramic radiography is sufficiently accurate for routine clinical purposes. CT scans have, however, an additional advantage in presurgical planning, since they reveal the horizontal dimension and shape of the mandible, and the topography and buccolingual location of the inferior alveolar canal.

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