premolars

"The incisors, in front, are shaped mostly for Biting, the pointed canines for tearing, and the premolars and molars for grinding food." articulator registration The condition of being worm-eaten.

前方的切齿主要用来咬住食物，尖的犬齿则撕裂食物，而前磨牙和磨牙则用来磨碎食物。

The Effect of Quantity of Periodontium on Extracted Human Premolars for Orthodontic Treatment with Jiggling Force

往复正畸力对正畸拔除前磨牙的牙周膜附着量的影响

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.

Methods: Seventy extracted maxillary first premolars were used in this study. The Tooth Length, Crown Length, Root Length, Cervix Thickness, Cervix Width, Crown Thickness and Crown Width were measured with a vernier caliper.

方法：收集牙齿发育完全根尖完整的上颌第一前磨牙70颗，用游标卡尺测量每个牙的牙长、冠长、根长、颈厚、颈宽、冠厚和冠宽。

methods human mandibular premolars with single, straight canals were obturated with lateral condensed technique and chloroform-softened technique.

方法选取40个下颌单根管前磨牙作为研究对象，A组20个采用侧方加压技术进行充填，B组20个采用氯仿软化牙胶尖充填技术。

Material and Methods: Thirty single-rooted premolars were randomly divided into three groups. For the 10 teeth of each group, we used the Profile rotatory device to prepare the root canal and remove its smear layer with 15% EDTA.

材料与方法：离体单根管前磨牙30颗随机分为3组，每组10颗牙采用机用Profile预备根管并去除涂层，分别采用手用充填器充填氢氧化钙糊剂；

Mandibular second premolars are the most frequently missing teeth while maxillary lateral incisors are second-most.

下颌第二前磨牙是最常见的缺失的牙齿，而上颌侧切是第二大。

Objective: To investigate the morphology of physiological foramen of mandibular premolars.

研究目的: 探讨下颌前磨牙生理性根尖孔的形态特征.

Root canal curvature of human mandibular premolars in buccolingual directions

离体下颌前磨牙根管的颊舌向弯曲

Objective: Using an in vitro study of the penetration and adaptation of pit and fissure sealant after pulse Nd: YAG laser etching the pits and fissures in occlusal surface of human premolars, to explore the utilization of laser etching in pit and fissure sealing.

目的：通过研究脉冲Nd：YAG激光蚀刻面窝沟后窝沟封闭剂的渗透性和密合性，探讨激光蚀刻在窝沟封闭中的应用价值。

if this is true, premolars will contain internal cracks that could only come from shattering large foods such as nutshells.

如果这是真的，那么，前磨牙将包含只能由咬碎像坚果外壳一样的大块食物造成的内部裂痕。

METHODS: Eighty-eight teeth that needed endodontic treatment in mandibular first premolars in vivo were selected from eighty-two patients.

方法：选取临床上需要进行下颌第一前磨牙根管治疗的患者82例88颗患牙。

Objective To research the preserved effect with complex therapy of the fractured premolars and molars.

目的研究后牙折裂综合治疗后的保存效果.

Conclusion: The computed image processing technique in DDRS can be applied to the clinical examination of the proximal caries in premolars as an adjunct method.

结论：直接数字化X线摄影系统的图像处理技术可以用于邻面龋临床辅助诊断。

Methods: Fresh health premolars were collected, divided into some groups according to age, embedded in paraffin and cut into slices.

方法：收集健康新鲜的前磨牙，按年龄分组，石蜡包埋切片，免疫组织化学与图像定量分析。

AIM : To observe the root morphology and canal anatomy of chinese premolars.

目的: 了解前磨牙根部解剖结构特点,为临床治疗提供参考.

To compare the different restorations of endodontically treated premolars, and to choose the best method.

目的从生物力学角度比较不同方法修复根管治疗后邻面缺损前磨牙的效果, 并探讨最佳的修复方案.

Objective To investigate root canal curvatures of human maxillary first premolars in buccolingual directions.

目的研究上颌第一前磨牙根管颊舌向的弯曲情况.

her mandibular incisors and left premolars occluded with her edentulous ridge, and her incisors were procumbent.

她的左下颌门齿和臼齿闭塞牙嵴与她和她的门牙被疐。

A study on morphology of isthmus in maxillary first premolars

上颌第一前磨牙根管峡部形态的研究

We have got the rates of the rotation about dog's single-root and monkey's multi-root teeth as well as those human canines and premolars. These results were achieved for the first time.

测量计算并经统计学处理，得出了犬单根牙、猴多根牙、人的尖牙和前磨牙扭转的速率问题，填补了这项工作的空白。

All the teeth were randomly divided into 7 groups, each has 10 premolars.

将离体牙随机分成7组，每组10颗。