Peck C C, Murray G M, Johnson C W, Klineberg I J
Faculty of Dentistry, Westmead Hospital Dental Clinical School, Westmead, Australia.
J Prosthet Dent. 1999 Sep;82(3):322-31. doi: 10.1016/s0022-3913(99)70088-0.
During lateral excursive and protrusive jaw movements, condylar points are distant from any instantaneous rotational center. Therefore, it is likely that different condylar points would follow similar trajectories during these movements.
This study evaluated the effect of changes in condylar point location on trajectories of condylar points on the nonworking side and during a protrusive jaw movement and compared these changes with the effects described for open-close and working-side condylar movements in the same group of subjects.
The movements of 5 clinically determined condylar points were recorded in 44 subjects during a contralateral excursion and during protrusion (7 radiographically determined condylar points in 2 subjects).
During any single jaw movement, the trajectory of each condylar point was similar in form and dimension to the other condylar points within that subject.
Changes in condylar point location had little effect on the trajectories of condylar points on the nonworking side and during protrusive jaw movement.
在侧方运动和前伸下颌运动过程中，髁突点远离任何瞬时旋转中心。因此，在这些运动过程中，不同的髁突点可能会遵循相似的轨迹。
本研究评估了髁突点位置变化对非工作侧髁突点轨迹以及前伸下颌运动时髁突点轨迹的影响，并将这些变化与同一组受试者中开闭运动和工作侧髁突运动所描述的影响进行比较。
在44名受试者进行对侧运动和前伸运动时记录了5个临床确定的髁突点的运动情况（2名受试者中记录了7个影像学确定的髁突点）。
在任何单次下颌运动中，每个受试者内每个髁突点的轨迹在形态和尺寸上与其他髁突点相似。
髁突点位置的变化对非工作侧髁突点轨迹以及前伸下颌运动时髁突点轨迹影响很小。
