(Ba-Na to Pt-Gn), total facial height (Na-Ba to Ba-PM) and lower face height (ANS-Xi to Xi-PM).
The degree of impaction was determined by the Pell and Gregory classification system, and the facial type was categorized by the facial axis angle.
15 In a "mesofacial" growth pattern, there is a relative harmony in these two directions, leading to a facial profile which is described cephalometrically by a 90(3) facial axis angle.
Facial profile was categorized on the basis of facial axis angle which is created by the lines Ba-Na and Pt-Gn.
Accordingly, an increase in the Y axis angle was also found, as well as in the anterior facial height and the lower-anterior facial height, indicating a vertical compensation of sagittal dysplasia similar to the one reported by Saadia (17) in a study in 112 patients between 6 and 12 years of age, who were treated with maxillary expansion and face mask showing an increase in FH-MP angle, SN-MP angle, and in Ricketts facial axis, although, as explained above, the orthopedic effect might be different.
Namara) Mandibular body length Distance Go-Me (Bjork) Goniac angle Ar-Go-MP (Bjork) Upper goniac angle Ar-Go and N-Go (Bjork) Lower goniac angle N-Go and MP (Bjork) Maxillo-mandibular difference Mc Namara NBA angle NA and NB (Riedel) Angle of convexity NA and A pog (Downs) Palatal plane and mandibular PP and MP (Kim) plane angle Occlusal plane angle and mandibular plane Witts Distance AO-BO (Jacobson) Y axis FH and S-Gn Ricketts facial axis angle Ba-N and Ptm-Gn (Ricketts) Anterior-inferior facial height Distance ANS-Me (Mc.
7% improvement in the Ra and shadows north-south facial axis
values with active treatment greater than vehicle control, as well as a trend for improvement in the Rz north-south facial axis
parameter, showing a 68.
Specific cranial landmarks were identified, and measurements were made of various aspects of the basicranium (figure 1), maxilla (figure 2), and mandible (figure 3), as well as the facial height (figure 4) and the facial axis (figure 5).
These measurements include the angle of the mandibular plane, the angle of the mandibular arch, lower facial height, the angle of facial depth, and the angle of the facial axis.
CC The intersection point of the BA-NA plane and the facial axis plane (figure 3).
Facial axis plane A line connecting the PT and GN points (figures 1, 3).