premolar clasp.
前磨牙卡环

Premolar extraction.
前磨牙拔除

Mandibular premolar.
下颌前磨牙

Maxillary first premolar
上颌第一双尖牙

maxillary first premolar
上颌第一前磨牙

First mandibular premolar
下颌第一前磨牙

the first premolar extraction
第一前磨牙拔除

Mandibular left second premolar tooth
下颌左第二前磨牙

Absence of a third or a fourth premolar or of one molar.
缺少一个第三或者一个第四前臼齿或者一个臼齿。

Measurement and analyses of the neck of maxillary premolar
上颌前磨牙颈部宽、厚、曲度的测量分析

Effects of second premolar extractions on third molar angulations
正畸拔除第二前磨牙后第三磨牙倾斜度的变化

Effects of different premolar extraction on lower third molar eruption
下颌前磨牙拔除对第三磨牙萌出的影响

This appliance provides 50 gm force to intrude the lower 4 th premolar.
利用此装置施予50克力量将第四小臼齿下压。

The effect of first premolar extraction on third molar angulation and eruption space
第一前磨牙减数治疗对第三磨牙角度和萌出间隙的影响

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。

it produced canine retraction in these patients who required first premolar extraction.
生产犬回缩谁在这些患者中提取所需的第一前磨牙。

Study on anatomy of apical foramen and morphology of root canal of maxillary first premolar
上颌第一前磨牙根管形态和根尖孔的解剖研究

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

Objective To evaluate the effect of autotransplantation impacted anterior tooth and premolar.
目得评价自体牙移植得临床效果。

Correlation and regression analysis of crown and root measurements of maxillary first premolar
上颌第一前磨牙冠根测量值的相关和回归分析

Investigation of Root Canal Curvature of Human Maxillary First Premolar in Buccolingual Directions
上颌第一前磨牙根管颊舌向弯曲情况的研究

Objective The aim of this study was to investigate the root canal system of maxillary first premolar.
目的观察离体上颌第一前磨牙根管解剖结构。

The experimental research of the wallop of crown remover to the abument tooth and the full crown of premolar
拆冠器对双尖牙全冠及基牙冲击力实验研究

The retention of gold alloy clasp on the molar was greater than that on the premolar in the same condition of undercut.
相同倒凹深度上，磨牙金合金卡环固位力比前磨牙大。

The comparison of periapical films in bisecting angle technique and in distant paralleling technique on evaluation of premolar tooth length
前磨牙根尖片分角投照与平行投照牙齿长度的对比研究