Chen Li-li, Duan Yin-zhong, Li Ruo-xuan, Wang Hai-xue, Xu Lu-lu, Bi Hui-xian
Department of Orthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2004 Mar;39(2):100-3.
To clinically investigate the results of unilateral extraction in the treatment of special moderate crowding cases.
22 patients with harmonic profile and moderate crowding were selected and treated by unilateral extraction with Edgewise technique. The patients crowding was 6 - 9 mm and focused on one side of the arch. 22 patients with moderate crowding were treated by bilateral extraction as control.
22 patients have been treated successfully within 18 months. Crowding was completely resolved. Midline coincidence was basically maintained.Good intercuspation was achieved. There is no significant difference in dental arch symmetry between unilateral extraction and bilateral extraction (P > 0.05).
Unilateral extraction can be successful in the treatment of special moderate crowding cases.
临床研究单侧拔牙矫治特殊中度牙列拥挤病例的效果。
选取22例面型协调的中度牙列拥挤患者，采用方丝弓技术进行单侧拔牙矫治。患者牙列拥挤度为6 - 9 mm，集中于牙弓一侧。选取22例中度牙列拥挤患者采用双侧拔牙矫治作为对照。
22例患者均在18个月内成功完成矫治。牙列拥挤完全解除。中线基本维持一致。达到了良好的牙尖交错关系。单侧拔牙与双侧拔牙在牙弓对称性方面差异无统计学意义（P > 0.05）。
单侧拔牙矫治特殊中度牙列拥挤病例可获得成功。
