Abstract

Objective: This study is aimed at producing norms for the Pharyngeal airway space in subjects with skeletal Class 1 and normal vertical relation and at the unveiling of constrictions related to skeletal morphology.

Materials and Method: The study sample consisted of 106 healthy untreated subjects (male=35 and female=71), ages ranging from 17 to 25 years old. The subjects were grouped according to ANB angle and their vertical relation. The cephalometric films were traced manually and analyzed using Mc Namara analysis of Upper and Lower pharyngeal airway spaces (UPA and LPA). Norms were obtained and the sizes of UPA and LPA compared in different sagittal and vertical relations.

Results: The mean and standard deviation of UPA 11.52 +-2.58mm and LPA 10.33 +- 2.96.mm. UPA and LPA showed no differences between Class 1 and Class 2 skeletal sagittal relation, and skeletal Class 1 Normodivergent and Hyperdivergent groups. The LPA width was significantly constricted in the Class 2 Hyperdivergent group. (p value 0.039), with positive functional relation with SNA and SNB angle. The UPA was unaffected.

Conclusion: The UPA and LPA widths were similar in Skeletal class 1 subjects including both vertical relations. The LPA was found to be significantly constricted in Skeletal class 2 Hyperdivergent subjects confirming to the preconceived notion of their constriction in the literature. These subjects maybe at risk of respiratory problems with retrusive oriented treatment modalities and sleep apnea.

Keywords: Lower Pharyngeal Airway; Pharyngeal Airway Space; Sagittal Relation; Upper Pharyngeal Airway; Vertical Relation

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Citation

Citation: Alaa M Abdalla and Amal H Abuaffan. “The Upper and Lower Pharyngeal Airway Widths in Different Sagittal and Vertical Craniofacial Patterns Among a Sample of Sudanese Adults”. Acta Scientific Dental Sciences 5.3 (2021): 02-11.

Copyright

Copyright: © 2021 Alaa M Abdalla and Amal H Abuaffan. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.