The duration with removable screw expansion mechanics was about 6 months on average while the duration with Edgewise appliances was about 1 to 2 years.

 
  • 结果16例上颌牙弓均得到了不同程度的扩大,同时除2例以外,14例下颌牙弓也随之扩大。
今日热词
目录 附录 查词历史