Luzi V
Am J Orthod. 1982 Jun;81(6):478-80. doi: 10.1016/0002-9416(82)90426-2.
In the study of a sample of eighty 9- to 13-year-old subjects with Class I malocclusions, it was found that a clear relationship exists between the SNA and NSAr angles, which vary according to an inverse ratio. Their combined value, called the CV value, is often constant, near 204.5 degrees. The same holds true when the NSAr angle is larger or smaller than average, which suggests the hypothesis that when dealing with a sagittal malocclusion one should consider the CV value rather than a single angle.
在一项对80名9至13岁I类错颌畸形受试者样本的研究中，发现SNA角和NSAr角之间存在明显的关系，它们呈反比变化。它们的组合值，称为CV值，通常是恒定的，接近204.5度。当NSAr角大于或小于平均值时也是如此，这表明在处理矢状向错颌畸形时，应该考虑CV值而不是单一角度的假设。
