前牙拥挤或上颌前突的矫治方法可以用减径法、减牙法或扩弓法,也可以选用上述三法中的任何两法联合使用。具体的说:减径法是将牙冠的近远申径减小;减牙法即减少牙的数量,使剩余在牙弓中的空间能将拥挤的牙在牙弓中排列整齐;扩弓法即是将牙弓宽度增大,使其在各个牙的近、远中径之间产生间隙,将这些间隙向远中关闭后,用 Anterior approach crowding or maxillary protrusion of the orthodontic method can reduce the law, reducing teeth or expanding the bow method, you can also use any of the above three methods in combination. Specifically: reduction method is to reduce the diameter of the crown far and near; reduce the number of teeth that reduce the number of teeth so that the remaining space in the dental arch will crowded teeth in the dental arch arranged neatly; Method is to increase the width of the dental arch, so that each tooth in the near and far radius of the gap between the gap will be closed to the far, with