Adamidis I P, Spyropoulos M N
Department of Orthodontics, University of Athens, Greece.
Am J Orthod Dentofacial Orthop. 1992 Apr;101(4):308-12. doi: 10.1016/S0889-5406(05)80323-3.
Various studies have documented a variability of hyoid bone position in relation to changed mandibular position or head posture. The aim of this study was to investigate the hyoid bone position and inclination on the cephalometric radiographs of two groups of patients exhibiting Class I and Class III malocclusions. The radiographs were taken in both centric occlusion and wide-opened mandibular position, and 17 measurements were performed on both tracings. The findings reveal a statistically significant difference in the position and inclination of the hyoid bone in the two groups; Class III patients, especially the boys, show a more anterior position of the hyoid bone and also a reverse inclination. This might have an implication on the function of the suprahyoid and infrahyoid muscles and thus on the direction of mandibular growth.
多项研究记录了舌骨位置相对于下颌位置或头部姿势改变的变异性。本研究的目的是调查两组表现为安氏Ⅰ类和Ⅲ类错牙合畸形患者的头颅侧位片上舌骨的位置和倾斜度。在正中咬合和下颌大开颌位时拍摄X线片，并在两张描图上进行了17项测量。研究结果显示两组舌骨的位置和倾斜度存在统计学上的显著差异；Ⅲ类患者，尤其是男孩，舌骨位置更靠前，且倾斜方向相反。这可能对舌骨上肌群和舌骨下肌群的功能有影响，进而影响下颌生长方向。
