测定垂直距离是制作全口义齿的重要步骤之一。传统的测定垂直距离的方法是用带游标横杆的钢直尺测量从鼻底到颏底的距离。我们在临床实践中体会到,这种方法尚有一些不足之处:1.鼻底(鼻小柱)颇软,稍受钢尺抵压,即可上升1mm～2mm,因此有时测得的数据不够精确。2.游标横杆与钢直尺的关系始终固定为90°,这仅在对直面型患者进行测量时较为适用,而对凸面型及凹面型患者进行测量时,尺与测量区的组织不 Measuring vertical distance is one of the most important steps in making complete dentures. The traditional method of determining the vertical distance is to measure the distance from the base of the nose to the base of the chin using a steel ruler with a cursor. We experience in clinical practice, this method has some shortcomings: 1. The bottom of the nose (columella) is relatively soft, slightly by the steel ruler, you can rise 1mm ~ 2mm, so sometimes the measured data Not precise enough. 2. The relationship between the slider and the steel ruler has always been fixed at 90 °, which is only suitable for the measurement of faceted patients. For the measurement of convex and concave patients, the measurement of ruler and measurement area is not