premolar的翻译，读音

例句

Absence of more than two first premolars or absence of a first and a second premolar. 缺少超过两个第一前臼齿或者一个第一和一个第二前臼齿. 。

They had four first premolar extraction, but the outcomes were not so satisfied. 此时如增拔上下第一大臼齿, 则可使臼齿区域的近远心关系及病人侧貌得到良好的改善. 。

Result: The mental foramen of some specimen were be distal to the secondary premolar. 结果：部分标本的颏孔位于下颌第二双尖牙远中。

Methods Left mandible(without the second premolar and the first molar)was used for specimen. 方法对缺失的下颌骨进行固定桥修复。

The retention of the clasp on molar is greater than premolar in the same condition of undercut. 相同倒凹条件下，磨牙卡环的固位力比前磨牙卡环大。