| 摘要: |
| ［摘要］ 目的 探讨安氏Ⅰ类错（牙合）畸形拔牙矫治前后上气道矢状径的变化。方法 选取青少年骨性安氏Ⅰ类牙列拥挤或双牙弓前突患者19例，拔除4颗第一双尖牙，采用直丝弓矫治技术进行矫治，疗程为22～27个月。将矫治前后的X线头颅侧位定位片进行上气道矢状径相关指标的测量，并将结果进行统计分析。结果 安氏Ⅰ类错（牙合）畸形拔牙矫治前后除SPP-SPPW的变化差异有统计学意义外(P<0.01)，上气道矢状径的其他测量指标变化差异均无统计学意义(P>0.05)。结论 拔牙矫治对青少年安氏Ⅰ类错（牙合）畸形上气道矢状径的影响较小。 |
| 关键词: 安氏Ⅰ类错（牙合） 上气道 拔牙 正畸 |
| DOI：10.3969/j.issn.1674-3806.2011.12.04 |
| 分类号:R 783.5 |
| 基金项目:广西卫生厅重点科研项目（编号：桂卫重200954）;广西卫生厅科研课题（编号：桂卫Z2009124） |
|
| Effects of extraction orthodontic treatment on the upper airway dimensions in patients with classⅠmalocclusions |
|
FANG Zhi-xin, ZHOU Yan, CHEN Shi-wen, et al.
|
|
Department of Orthodontics, the People′s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
|
| Abstract: |
| ［Abstract］ Objective To investigate the effects of extraction orthodontic treatment on the upper airway dimensions in adolescent patients with classⅠmalocclusions.Methods Nineteen adolescent patients with classⅠcrowding or bimaxillary protrusion malocclusions who were orthodontically treated by straight wire appliance and with 4 premolar extraction were studied.The period of the correction was 22 to 27 months. Cephalometric analysis of each patient were performed before and after treatment on the sagittal upper airway dimensions.The measurements were tested by statistical analysis.Results After extraction treatment, the chang of most measurements of upper airway showed no significant difference (P>0.05)except the measurements of SPP-SPPW (P<0.01)in the patients of classⅠmalocclusions after the extraction treatment.Conclusion The effects of extraction orthodontic treatment on the upper airway dimensions in adolescent patients with classⅠmalocclusions was limited. |
| Key words: ClassⅠmalocclusions Upper airway Extraction Orthodontics |
