舌骨往往不被人们所注意。然而,它在人体结构中是不同于其它头颈部骨骼的唯一独特的结构。它没有骨关节,主要有两组肌群附着其上、即:舌骨上、下肌群。这些肌肉在下颌运动,吞咽活动、气道的形成以及维持头颅的垂直姿势等方面有着重要的功能。而功能紊乱本身就是导致错(牙合)畸形的原因之一。舌骨则是通过这些软组织与口 Hyoid often not be noted. However, it is the only unique structure in the anatomy that is different from other head and neck bones. It has no bone and joint, there are two main groups attached to its muscles, namely: hyoid upper and lower muscle groups. These muscles play an important role in mandibular movement, swallowing activity, airway formation, and maintaining the vertical posture of the skull. The dysfunction itself is one of the causes of malocclusion. The hyoid bone is through these soft tissues and the mouth