Evaluation of Airway Volume by CBCT in Patients with Class I and Class II Skeletal Patterns: A Pilot Study


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Duyan H. , Evlice B.

1st INTERNATIONAL TURKISH JAPANESE DENTAL CONGRESS, Ankara, Turkey, 24 - 26 June 2021, pp.97

  • Publication Type: Conference Paper / Summary Text
  • City: Ankara
  • Country: Turkey
  • Page Numbers: pp.97

Abstract

Introduction/Purpose: Anatomical changes of the craniofacial structure and soft tissue may affect the morphology and volume of the pharyngeal airway space. The purpose of this study is to compare the airway volumes in patients with class I and II skeletal patterns with cone-beam computed tomography (CBCT).

Method: The study sample consisted of 34 class I patients (12 females and 22 males; mean age: 42.88±11.94) and 34 age and sex matched class II patients (12 females and 22 males; mean age: 42.88 ±11.94). The sample was divided into two groups according to the anteroposterior jaw relationship; The angle ANB was defined as Class I from 0° to 4°, and Class II if it was greater than 4°. Images in DICOM format were transferred to Dolphin 3D software. The upper limit according to the pharyngeal airway boundaries was defined as the line passing through the anterior nasal spina and the posterior nasal spina points. The lower border was defined as the line passing through the supero-anterior edge of the fourth cervical vertebra and the mentone points. The independent sample t-test was used to evaluate the airway of patients with class I and class II skeletal patterns and the Mann-Whitney U-test was used to compare the parameters according to gender (p<0.05). IBM SPSS software version 25.0 statistical program was used for statistical analysis. The significance level was set at 5% (p- value < 0.05).

Findings: The airway volumes of patients with class II skeletal pattern (24063 ± 7232) were smaller than those of patients with class I skeletal pattern (24527 ± 8951). But the difference between the groups was not statistically significant (p>0.05). There was no statistically significant difference in airway volume between the genders in both groups (p>0.05).

Conclusion: Airway volumes of patients with class I and class II skeletal patterns are similar.