Condylar position in children with functional posterior crossbites: before and after crossbite correction.

The purpose of ttu’s project was to determine whether functional posterior crossbites in children influence the position of the mandibular condyle and assess the effect of crossbite correction on condylar position. Ten children from four to nine years of age with functional posterior crossbites were treated by maxillary expansion. Standardized transcranial temporomandibularjoint radiographs were taken prior to treatment and following crossbite correction. Pretreatment radiographs were taken with the child’s teeth occluded in the crossbite relationship. Post treatment radiographs were made with the teeth in centric occlusion. Prior to treatment, there were significant differences in the horizontal and vertical joint space measurements between the crossbite and noncrossbite sides. There were no significant differences between the two sides following crossbite correction.