Objective The purpose of this cephalometric study was to compare the difference of NHP (natural head posture) and spinal position among malocclusions with different skeletal pattems.

• 摘要目的比较不同骨型的错（牙合）患者头位、颈椎位置的差异，寻找颅面发育和自然头位、颈椎位置之间的关系。