CAJ | 학술논문

目的：比较双颌前突成人与青少年患者拔牙矫治前后上气道矢状径的改变。方法采用计算机辅助X射线头影测量技术，对41名双颌前突成人及27例青少年患者的X射线头颅定位侧位片进行测量及上气道间隙分析。比较成人与青少年双颌前突患者拔牙矫治前后的上气道矢状径的改变。结果青少年患者拔牙矫治后上气道无明显减小，舌骨向下移位。成人患者PNS-Adl、PSP-SPPW、U-MPW明显减小（ P＜0.05）。结论拔牙矫治内收上下前牙会使成人双颌前突患者上气道矢状径明显减小，而对青少年患者上气道影响不大。
목적：비교쌍합전돌성인여청소년환자발아교치전후상기도시상경적개변。방법채용계산궤보조X사선두영측량기술，대41명쌍합전돌성인급27례청소년환자적X사선두로정위측위편진행측량급상기도간극분석。비교성인여청소년쌍합전돌환자발아교치전후적상기도시상경적개변。결과청소년환자발아교치후상기도무명현감소，설골향하이위。성인환자PNS-Adl、PSP-SPPW、U-MPW명현감소（ P＜0.05）。결론발아교치내수상하전아회사성인쌍합전돌환자상기도시상경명현감소，이대청소년환자상기도영향불대。
Objective To investigate the effects of extraction orthodontic treatment on the upper airway dimensions in adult and teenager patients with bimaxillary proclination .Methods Cephalograms before and after orthodontic treatment in 41 adults and 27 teenagers with bimaxillary proclination were investigated by using computerized cephalometric analysis .Upper airway dimensions were measured.Results In the teenager group,the hyoid was retracted in vertical directions but no statistical difference was found in other parameters of the upper airway dimensions .However,there were statistically significant reductions in PNS-Adl,PSP-SPPW and U-MPW ( P<0.05 ) in the adult group .Conclusion Extraction treatment leads to a narrow in upper airway of the adult patients while it does not affect teenagers .