Conclusion vertical control was good in jaw bone and was not effective in dentition when applying maxillary protraction combined with rapid expansion.
结论联合上颌前方牵引及快速扩大方法对颌骨垂直向控制较好，但对牙齿垂直向控制较差。
Pneumatic jaw valve adopts pneumatic draw stem and it can control remotely or in local equipped with fittings grouping.
气动鄂式闸门采用气动推杆，通过配件组合可以远距离操纵或现场控制。
The control group were treated with suspended traction by a cervical vertebral extraction belt at pillow-jaw sitting position.
对照组采用枕—颌式坐位颈椎牵引带进行悬吊牵引。
The control group were treated with suspended traction by a cervical vertebral extraction belt at pillow-jaw sitting position.
对照组采用枕—颌式坐位颈椎牵引带进行悬吊牵引。
应用推荐