Evaluation of the Pharyngeal Size in Skeletal Class I and Class II Subjects Diseases

Aims: The aims of the study were to measure different variables of pharynx in class I and class II skeletal
relation, clarify the effect of gender on the pharyngeal measurements and to find the effect of different
classes (class I and class II) on the pharyngeal measurements. Materials and Methods: The
samples consisted of cephalometric films of 40 subjects, 20 males (10 class I and 10 class II) and 20
females (10 class I and 10 class II). These films were traced and ten linear measurements of the pharynx.
Results: No significant difference were noticed between males and females in class I participants
except in BaPNS (sagittal depth of the bony nasopharynx), PNSppw (the sagittal depth of the pharynx
along the line ANS PNS) and hyMP (millimeter distance from hyoid to the mandibular plane),
where males showed a significantly higher value; while males showed a significantly higher value in
Ba ad2 (sagittal depth of the nasopharyngeal airway along line S Ba) and hyapw2 (millimeter distance
from hyoid to ap2) in class II. Conclusions: No significant differences were noticed between
males and females in class I and class II skeletal relation in most of the measured variables and also no
significant differences were noticed in the same gender neither in class I nor in class II.