本文就我院近年来６９例牙列拥挤患者减数矫治的牙位分布进行统计分析：６９例病例中，年龄在１２～２５岁间，被减数的牙齿共１２８颗。最常被选作减数对象的是第一双尖牙，约占拔牙总数的６５．６％，减数该牙可同时缓解前段和后段的拥挤；被减数的牙中，占比例较多的其... In this paper, 69 cases of dentition crowded patients in our hospital in recent years, the number of teeth reduction treatment for statistical analysis: 69 cases, aged 12 to 25 years old, a total of 128 teeth were subtracted. The most commonly chosen as the object of reduction is the first pair of canines, accounting for 65.6% of the total number of extractions, the reduction of the teeth can alleviate the congestion of the anterior segment and the posterior segment; More of its ...