Bishara S E, Fahl J A, Peterson L C
Am J Orthod. 1983 Aug;84(2):133-9. doi: 10.1016/0002-9416(83)90177-x.
The changes in the ANB angle and the Wits appraisal between the ages of 5 and 25 years were evaluated in twenty male and fifteen female subjects. All subjects had clinically acceptable occlusions, and none had undergone orthodontic therapy. Descriptive statistics were calculated, and analysis of variance was performed. The conclusions derived from this investigation are as follows: (1) No significant differences were observed in the changes between male and female subjects for either ANB or Wits between age 5 and adulthood. (2) The ANB angle changes significantly with age, while the Wits appraisal indicates that the relationship between points A and B does not change significantly with age. (3) Correlation coefficients showed that the ANB angle and the Wits appraisal are significantly correlated but the r-values are relatively low. These findings explain the discrepancies that are present in some cases between the measured values of the ANB angle and the clinical judgment of the orthodontist. For a more accurate diagnosis of the anteroposterior apical base relationship, both the ANB angle and Wits appraisal should be used.
对20名男性和15名女性受试者在5岁至25岁之间ANB角和Wits评估的变化进行了评估。所有受试者的咬合在临床上均可接受，且均未接受过正畸治疗。计算了描述性统计量，并进行了方差分析。本次调查得出的结论如下：（1）在5岁至成年期，男性和女性受试者在ANB或Wits方面的变化均未观察到显著差异。（2）ANB角随年龄显著变化，而Wits评估表明A点和B点之间的关系随年龄变化不显著。（3）相关系数表明ANB角和Wits评估显著相关，但r值相对较低。这些发现解释了在某些情况下ANB角测量值与正畸医生临床判断之间存在的差异。为了更准确地诊断前后根尖基骨关系，应同时使用ANB角和Wits评估。
