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논문 기본 정보

자료유형
학술저널
저자정보
Sung-Hun Kim (Department of Orthodontics School of Dentistry Pusan National University Yangsan Republic of Korea)
저널정보
조선대학교 치의학연구원 Oral Biology Research Oral Biology Research 제47권 제2호
발행연도
2023.6
수록면
35 - 42 (8page)
DOI
10.21851/obr.47.02.202306.35

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초록· 키워드

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This study aimed to assess the alterations in the pharyngeal airway space (PAS) due to mandibular advancement (MA) and mouth opening using lateral cephalograms and establish their relationship with surrounding structures that cause these changes. Twentyseven patients with a chief complaint of mandibular retrognathism (15 males and 12 females) were included. Two lateral cephalograms of each patient were obtained at different mandibular positions: centric occlusal and anterior edge-to-edge bite positions. To compare changes in the surrounding structures and PAS, paired t-test was employed. Correlation tests between the changes in the mandible and PAS were performed using Pearson correlation analysis. A statistically significant increase in the PAS was observed due to MA and mouth opening. The length of the tongue increased (p<0.001), whereas its height decreased (p<0.001). Furthermore, the soft palate advanced frontally (p<0.001), and the hyoid bone was displaced superiorly (p=0.001). A positive correlation was found between the changes in the mandible and PAS of the velopharyngeal area. In patients with growing mandibular retrognathism, MA and mouth opening increased the dimensions of the PAS due to improvements in the tongue, soft palate, and superior positioning of the hyoid bone.

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