This study compared the anatomical structures of the nasomaxillary complex on the basis of two complementary types of exams: the occlusal radiograph
of the maxilla and the computerized tomography (CT). Thirty-nine radiographs of patients enrolled at the Interceptive Orthodontics clinic at
PROFIS, Bauru – SP, were compared to 18 patients who underwent CT. All patients were either in the primary or in the mixed dentition. The palatal
suture was seen in the radiographic and CT images; however, the radiographic images were not so clear due to overlapping of upper structures such as
the vomer and the frontal bone. Images such as the palatal suture and the palatal foramen were seen only in the CT. The nasolacrimal canal was only seen
in the radiograph. Although the CT has advantages over the radiograph such as the lack of overlapping of anatomical structures, it is not routinely indicated
for orthodontic diagnosis and treatment planning. In these cases, the occlusal radiograph of the maxilla is preferable.
(Rev Esp Ortod. 2005;35(1):055-068)