AIM: To evaluate the condylar position, in anteroposterior and transverse directions, in subjects with functional unilateral posterior cross-bite, relating it to the side in which the cross-bite was present and also to determine if there was any change in the condylar position of these patients after the malocclusion treatment. METHODS: It was used a sample of thirteen (13) patients who presented unilateral posterior cross-bite. These patients were submitted to a tomography with three lateral cross-sections of each ATM and another tomography with two frontal cross-sections of each ATM, before and after the cross-bite correction. To treat the cross-bite was used a Porter appliance. RESULTS: It was not found any specific condylar position for the subjects with unilateral posterior cross-bite but a wide variability of positions, not only in the anteroposterior direction but also in the transverse one, it was not found, as well, a significative correlation between the position and the side of the cross-bite in both directions. It was found a change in the condylar position after the treatment of the unilateral posterior cross-bite, however it didn't present a specific pattern.
Temporomandibular joint; Malocclusion; Mandibular condyle
