The aim of the present project is to analyze the impact from orthognathic surgery on the upper airway respiratory volume. The primary objective is comparison of differences in the in the airway changes due to maxillary movements and mandibular movements. Secondary objectives are the analysis of any correlation between the magnitude of the movement and the airway volume, correlation between the direction of the movements and the changes in airway volume and correlation with Health-Related Quality of Life (HRQoL). Expected confounding factors like smoking habits and Body Mass Index (BMI) will be analyzed.
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Changes in upper airway volume
Timeframe: Preoperative and 12 months postoperative follow up.