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A cephalometric comparative study of pharyngeal sagittal dimension in different skeletal patterns | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 23, Issue 1, 2011, Pages 100-106 | ||
| Authors | ||
| Mustafa M. Al-Khatieeb; Reem A. Al-Aani; Fakhri Abid Ali | ||
| Abstract | ||
| ABSTRACTBackground: Because of the close relationship between pharynx and the dentofacial structures, this study wasconducted to find whether the pharyngeal sagittal dimension could be affected by the positional relationshipsbetween jaws, and to determine the pharyngeal parameters difference in both genders in different skeletal patterns.Subjects and method: The study sample consists of 120 digital radiographs of Iraqi subjects (60 males and 60 females)attending Orthodontic Clinic in the College of Dentistry; University of Baghdad. The 120 radiographs were dividedinto three groups (40 radiographs for each group) according to the ANB angles: ANB angle smaller than one degree(Class III), between two and four degrees (Class I), and larger than four degrees (Class II), each group was furtherdivided into two subgroups according to gender (20 radiographs for each gender), eleven linear and two areameasurements were used to assess the pharyngeal structures.Results: Student's t-test showed a significant difference (P<0.05) for t-PPW and Hy-APW2 measurements in all of thethree skeletal groups, with males had shorter t-PPW plane than females, and females had shorter Hy-APW2 planethan males, on the other hand, Hy-APW4 plane and oropharyngeal area showed highest mean values in skeletalclass III, intermediate values in class I, and lowest mean values in class II in both males and females, F- test analysis ofvariance showed highly significant differences (P<0.01) between all skeletal groups for total males and females inregard t-PPW plane, Hy-APW2 plane, Hy-APW4 plane, and oropharyngeal area.Conclusions: It can be concluded that the pharyngeal sagittal dimension have not been affected by gender typeexcept for t-PPW and Hy-APW2 planes, and the larger the ANB angle, the less Hy-APW4 and oropharyngeal areameasurements, and this may be attributed to the different location of the tongue, hyoid bone, and mandible inskeletal class II malocclusion than other skeletal configurations.Keywords: Pharyngeal sagittal dimension, skeletal patterns. (J Bagh Coll Dentistry 2011;23(1):100-106). | ||
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