牙

Your dentist will then put abetment on the inplant, sometioes this is done during the initial implant operation depending on the positiongs of your bones and teeth.

有的医生会根据您牙骨及牙位情况，选择在植入牙体的同时连基台一起装上。甚至同时戴上临时牙冠，使您即刻拥有灿烂笑容。

Tooth agenesis also named teeth number deficiency. It happens in tooth forming process or earlier period of tooth germ development.

先天缺牙又称牙齿数目不足，是在牙胚形成过程中或牙胚发育的早期，即牙蕾形成期的异常。

After 16 weeks growth, continuous and intact ameloblast, enamel, dentin, odontoblast was found.

生长16周的人牙胚，已经形成连续完整的成釉质细胞，牙釉质、牙本质和成牙本质细胞层。

The results suggest that Smad4,one of the intracellular downstream molecules of TGF-β superfamily,and an inductive signal mediating epithelial-mesenchymal interaction,may regulate the differentiation of ameloblast and odontoblast cells,and modulate dentinogenesis and amelogenesis.

结论首次观察到Smad4信号分子在人牙胚发育过程中的表达，Smad4作为TGF-β超家族细胞内信号分子，可能参与上皮间充质的相互作用，同时也参与成釉细胞和成牙本质细胞的分化以及牙釉质和牙本质的形成。

Results showed that β-catenin was positive expression in stellate reticulum,inner dental epithelium,and dental sac at cup stage,in inner dental epithelium,dental papilla cell,and cell nucleus at early bell stage,in cervical loop and cusp cell membrane at late bell stage,and in ameloblast and odontoblast cell at amelogenesis stage.

结果表明，帽状期在星网层、内釉上皮、牙囊均为细胞核阳性表达；钟状早期在内釉上皮、牙乳头细胞核阳性表达；钟状晚期在颈环、牙尖细胞膜阳性表达；成釉期早期在成釉质细胞、成牙本质细胞阳性表达；成釉期晚期均阴性表达。

Curve functions of axial buccal crown and gingiva contour of each section were acquired by means of curve fitting, and the angle of emergence pofile was calculated, which represents the degree of undercut. Results There is unique relationship between axial crown and gingiva contour individually. This character of tooth is similar to its contralateral tooth.

结果 不同个体的牙冠轴面外形和牙龈外形有其特定的几何关系，同一断面的牙冠轴面外形曲线对应特定的牙龈外形曲线；同名牙同一断面的牙冠轴面外形之间及牙龈外形之间的重叠性很好。

Three cross-sections were made through crown and gingiva of the model tooth. Curve functions of axial buccal crown and gingiva contour of each section were acquired by means of curve fitting, and the angle of emergence pofile was calculated, which represents the degree of undercut.

以下颌第二前磨牙为研究对象，在牙列模型上通过牙冠部、牙龈作3个纵断面，用曲线拟和的方法得到每个断面的牙齿轴面外形及相应牙龈外形的曲线方程，以此分析两者之间的关系并计算牙冠起始外形角度，即倒凹程度的大小。

As the conclussion,the fixed bridgework supported by the combination of teeth and terminal fixture abutment should be a special design accepted in clinical practice.

虽然应力在各个基牙上分布不均匀，但是基牙间比较，其应力值范围较为接近，天然牙-末端种植牙固定桥设计为临床可采用的特殊固定桥。

Each tooth crown mesiodistal size between the first molar and the opposite molar of 240 dental casts was measured by electric calliper.

由作者用数字游标卡尺对240例模型上下颌第一恒磨牙到对侧第一恒磨牙共二十四颗牙每牙最大近远中径进行测量。

All these lines have been proven for their capability of differentiation into odontoblast, dentin, pulp, or cementum in vivo.

这些不同来源的牙齿干细胞，在囓齿动物移植实验中，可以分化为牙本质母细胞，进而形成牙本质，或分化成为牙髓结构，或形成牙骨质。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。