Methods: 20 adult patients with mandibular deviation (male 12, female 8, with the age from 19 to 36 years old) were selected in our research. 20 adults (male 11, female 9, with the age from 19 to 33 years old) with ideal occlusion were as the controls. All the samples were taken with the CT scanning and three directional reconstructing on the morphology of condyle and fossa. The morphologic measurement of condyle, fossa and the position of condyle in fossa were taken in this research.
Results: The asymmetry of the condyle on the two sides was found in adult patients with mandibular deviation. The height and the diameter of the condyles on the deviated side were shorter than the other side. The shape of fossae was different on the two sides. The position of the condyles on the deviated side was found to rotate to backward, upward. While the condyles rotated to forward, downward on the other side.
Conclusion: the shape and the position of condyle were asymmetry on the two sides, while no difference of the fossae in adult patients with mandibular deviation was found in our research.