Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
RP - Research PosterIMAGING FEATURES OF AMELOBLASTOMAS AND KERATOCYSTIC ODONTOGENIC TUMORS: THE ROLE OF CT IN CORTICAL BONE ANALYSIS
Section snippets
Study Design
The sample consisted of 10 cases of ameloblastomas and 10 cases of KCOT. Images in panoramic radiographs and CT images were analyzed according to shape, internal structure, borders, associated unerupted tooth, root resorption, expansion and perforation of cortical bones.
Results
9 ameloblastomas had balloon shape of buccolingual expansion of cortical bone, which was associated with lower border of the mandible in 4 cases. Five KCOTs showed fusiform shape of buccolingual expansion without lower border of the mandible expansion. Erosion of cortical bone was frequent in ameloblastomas (7/10) and KCOTs (7/10). On the other hand, root resorption was observed only in ameloblastomas (7/10) and none KCOT presented this finding.
Conclusions
Conventional radiography remains the first choice for the initial evaluation of tumors of the gnathic bones. However, CT allows to evaluate the buccolingual expansion and perforation of the cortical bone. In addition, when root resorption is observed is more probable to be ameloblastoma than KCOT.