Impacted tooth frequently appears in upper cuspid and upper central incisors(except of the third molar) .

较常见的是尖牙和上颌切牙的埋伏阻生（第三磨牙除外）。

Taxol content in needle and swig of Taxus yunnanensis was the highest within four species from East Asia area, Taxus cuspid…

短叶醇含量则以短叶红豆杉针叶最高，东北红豆杉及云南红豆杉次之。

Objective: To study the tooth size correlation between permanent cuspid and bicuspid group and other teeth groups in malocclusion.

目的：研究错牙合、正常牙合的尖牙、双尖牙组与其它组牙的相关性，为尖牙、双尖牙组的预测提供科学依据。

Conclusion: Predicting the tooth size of cuspid and bicuspid group in malocclusion can't simply follow the law of normal occlusion.

结论：临床上对错尖牙、双尖牙组的预测不能简单等同于正常。

Methods: a 3-d FEM model of lower cuspid was established by using DICOMdata and stimulant mechanical experiment was carried out on the model.

方法：利用DICOM数据建模法，建立下尖牙的三维有限元模型，模拟力学实验。

Serious tooth defect which involved cuspid, incisal Angle, marginal ridge and occlusal surface can't be filled and need occlusal reconstruction.

各种严重的牙体缺损已涉及牙尖、切角、边缘嵴以及合面，需要咬合重建而不能使用一般充填修复者。

The vertical shifts of brackets could change the preadjusted torque value and the design of cuspid bracket should have the distinction between mesial and distal shape.

托槽垂直向移位可引起既定转矩值的改变，尖牙托槽底板弧度应有近远中之分。