경두개방사선사진과 파노라마TMJ방사선사진에서 하악과두 운동의 비교

Abstract

Purpose: To evaluate the difference of the movement of mandibular condyles between transcranial and panoramic TMJ radiographs to view the movement of the mandibular condyles. Materials and Methods: Thirty-four paired transcranial and panoramic TMJ radiographs of patients were used to evaluate the movement of the mandibular condyle. The distances, from most superior point of the mandibular condyle to most inferior point of the articular eminence on both radiographs, were measured. The measurement was taken at closed state and maximum opening state of each radiograph, and taken at each side. Differences between matched pairs were analysed by paired t-test, with significance established at P < 0.05. Results and Conclusions: The mean distance, from most superior point of the mandibular condyle to most inferior point of the articular eminence on both radiographs, was statistically different at each side (P < 0.05). At closing state the mean distance measured on panoramic TMJ radiographs was longer than on transcranial radiographs (0.85㎜ at right side, 1.20㎜ at left side). But at maximum opening state the mean distance on transcranial radiographs was longer (1.00㎜ at right side, 0.62㎜ at left side) than panoramic TMJ radiographs.