Özet:

Purpose: The configuration and sizes of the upper respiratory path is determined by the anatomical structures surrounding soft tissues, muscles and pharyngs. The anatomical anomalies of the soft tissue and craniofacial skeleton can change the volume and morphology of the faryngeal airway emptiness. The aim of this study is to compare the volume of airways of patients with class I, II and III scellular paternes based on sefalometric analysis with conic radiated computer tomography (KIBT). Tools and Methods: This study was conducted on the KIBT cuts of 46 individuals applying for orthodontic therapy. The sample was divided into three groups according to the anteroposterior cornea ratio; the ANB angle was determined as Class I from 0° to 4°, and if the grade was greater than 4°, Class II and if the grade was smaller than 0°, Class III. Simplant O&O Dental Software was used to evaluate the sagittal direction opening in three-dimensional images. KIBT images for airline measurement were obtained in the DICOM format in the Romexis software program. Images were studied in the 3D DOCTOR program, using action cuts according to threshold values. Volumes with airway segmentation; spina nazalis posteriordan 4. It was measured as much as the vertebrate was first seen. Results: The age range of patients is between 16-33 (20,94 ± 4,48), 31 women, 15 men. 15 of the patients divided into 3 groups, class I, class II, class 20 and class 11 were identified as class III. In the total sample, the airline volume was 38004,02 ± 13531,53 cubic voksel. The average airline volume was higher in individuals with class I’s skeletal pattern than in individuals of class II and III. However, the volume measurement values between groups did not show a statistically meaningful difference (p<0,05). Result: In this study, airline volumes were found smaller in Class II group but the differences between groups were not statistically meaningful.  Keywords Airway volume, Sefalometric analysis, KIBT

Anahtar Kelimeler: