查询词典 premolars

Complete dentition is to be preferred. Any missing teeth other than first premolars is a serious fault.

齿系完整。除了第一前臼齿外，缺少其他牙齿都属于严重缺陷。

Materials and Methods: the HPDLFs were isolated and cultured in vitro from healthy premolars of orthodontic patients, which were 10~14 years old.

材料和方法：取材自临床上10～14岁青少年需要拔除的健康的正畸牙，在体外分离、培养并纯化人牙周膜成纤维细胞，建立人牙周膜成纤维细胞有限细胞系。

From each side, in the lower jaw,(1) is the canine,(4) the small premolars,(1) the large molar, and (2) the smaller molars.

而在两边的下颚处，各有（1）颗犬齿，（4）颗小前臼齿，（1）颗大臼齿，以及（2）颗小臼齿。

The first group is the6 incisors, the next group is the four premolars on the bottom and top of each side, and the final group is the three top molars and two molars on the bottom of each side.

第一组是6颗门齿，第二组是每边的底部和顶端上的四个小臼齿，最后的一组是两边顶端三颗臼齿和底部的二颗臼齿。

Methods first, the pulp cavity walls of 25 maxillary premolars were systematically observed and photographed by scanning electron microscopy, then, these photographs were analysed by morphometry.

首先采用扫描电镜对25颗4的髓腔壁进行系统观测，并分区定点摄影，然后对扫描电镜照片进行形态测量。

Objective The purpose of this study is to reveal the micromorphological featare and law of the pulp cavity walls of human premolars and to provide a micromorphological basis for root canal therapy and dentine sensitivity.

目的：揭示在髓腔壁的微细形态学规律，为根管治疗术以及理解牙本质过敏现象提供应用形态学基础。

Objective The purpose of this study is to reveal the micromorphological featare and law of the pulp cavity walls of human premolars and to provide a micromorphological basis for root canal therapy and dentine sensitivity.

提 要 目的：揭示在髓腔壁的微细形态学规律，为根管治疗术以及理解牙本质过敏现象提供应用形态学基础。

Methods: Fourty-five mandibular second premolars with single oval-shaped root canal were prepared with step-back technique and filled with warm vertical compaction technique. The teeth were divided into three groups randomly: ProTaper group, Mtwo group and manual stainless group. The operating time was recorded.

45颗具有椭圆形根管的下颌前磨牙经逐步后退法预备、热牙胶垂直加压充填后随机分为3组，分别用ProTaper再治疗器械和ProTaper器械，Mtwo再治疗器械和Mtwo器械，手用H锉和K锉去除牙胶。

Methods:Thirty extracted mandibular first premolars with only one root canal and root-canal curvatures between 13° and 38.5° were divided into three groups.

材料与方法：选用山东大学口腔医学院口外门诊拔除的下颌第一前磨牙(单根管、根管弯曲13°～38.5°)。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。