ABSTRACT

The aim of this study is to evaluate the effect of cervical headgear on point B. The study depends on 40 lateral cephalometric films of 20 cases. 10 Class II, 1 cases had undergone cervical headgear therapy (Treatment group) and 10 Class II, 1 cases had received no treatment (Control group). 4 angular and 5 linear measurements were made on the films. By comparing the treatment and control groups, the changes related to growth was eliminated and the following results were obtained; According to SNB angle there was a statistically significant (p < 0.05) difference between the two groups. SNB angle increased more in the treatment group. But in a measurement which was made to see the linear difference on point B, there wasn't any statistically significant difference between the two groups.