查询词典 protraction

Key words: anterior crossbite;skeletal class iii;early treatment; maxillary protraction; cephalometric analysis

前牙反牙合；骨性ⅲ类；早期治疗；前方牵引；头影测量分析

Methods Twelve cases of anterior crossbite and crowded dentition (with 6~12 mm) were included using extroral arch and extroral protraction in the same time or in the different time.

选择混合牙列期或恒牙早期有前牙反并牙列拥挤（拥挤度6~12 mm）病例12例，同时或先后使用前方牵引装置和口外弓装置，观察疗效。

Marc software, and analyze influence to the craniofacial complex against different strength and direction of protraction, then calculate the stress、 strain and displacement values at 320 different conditions, and finally protract the stress anddisplacement nephograms.

Marc软件模拟上颌前牵引的边界条件，分析比较了不同大小和方向前牵引力对颅面复合体的影响，计算320种工况下模型每个节点应力、应变和位移的数据。

Results After all the patients were treated with maxillary protraction ,facial angle decreased,H angle increased,Ls move forward,Ss move forward, anterior lower face height increased, and the changes had statistics significance.

结果 本研究24例骨性III类错牙合，经上颌前方牵引器矫治后，患者软组织面角减小，H角增大，上唇突点前移，上唇凹点前移，下面高增加，且有统计学意义。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。