牙

Methods ABC method was applied to detect ER and PR in 20 healthy persons (10 males and 10 females),as well as in 58 patients,of which 14 cases were dental pulp polypus,20 were apical cysts,and 24 were periapical granuloma.

应用ABC法对20颗健康牙髓作为对照组及14例牙髓息肉、20例根尖囊肿和24例根尖肉芽肿作为实验组做ER、PR检测。

Experiment two Influence of fiber framework design on stress distribution in posterior GFRC-RBFPD By comparing the difference of stress distribution among models with different fiber frameworks, the reinforcement mechanism and effect of different framework designs were discussed.

建立的〓和〓桥基牙、GFRC-RBFPD及其相关牙周组织和牙槽骨的三维几何模型，以及三维有限元模型具有很好的转换性，可以针对不同力学问题进行分析研究。

Objective: To study the stress of mandible premolar under various loadings on its traumatic occlusal spots.

目的：研究不同载荷加载于下颌前磨牙临床常见的创伤性咬合点时牙体组织的应力分布。

Abstract］ AIM: To study the expression of vasoactive intestinal polypeptide in dental pulp-dentine complex of human premolar and its function.

摘 要］目的：研究血管活性肠肽在牙髓牙本质复合体中的表达，探讨其功能。

Methods: 50 maxillary first premolar and 60 maxillary second premolar were included in the study.

挑选拔除的50颗上颌第一前磨牙及60颗上颌第二前磨牙。

Methods The 30 extracted health premolar were divided into 3 groups (10 in each).

方法在30颗健康后牙的釉质和牙本质边缘制备V类洞，随机分为三组，每组10颗。1组使用玻璃离子充填，2组使用聚羧酸锌充填，3组使用EB树脂充填。

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。

Pearson product moment correlation coefficients were used to analyze the effect of the age, cranial length and maxillary length on the molar's location in the maxilla.

但是后续的实验研究表明，上颌第一恒磨牙的位置并不是固定不变的，它会随着牙弓内、外因素的变化而发生位置的变化，影响错畸形的形成[1]。

The average age was 10.5 years.X-ray cephalometry showed some cases with light mandibular prognathism.

均为替牙期功能性反牙合，X线头影测量显示部分病例为轻度下颌前突。

Methods In four kinds of prosthodontia design models, stress distributions in the remaining sections of the alveolar bone of the mandibular first molar with hemisection models were evaluated.

运用光弹应力冻结切片法，分析⑤⑥⑦、⑤⑥、⑥⑦、⑥固定桥修复模型的第一磨牙半切术后余留根牙槽骨应力分布状况。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐