牙

It is difficult to restore the large defect of pulpless tooth body. The dentinal peg and root canal peg filling were used before, which needed specialized instrumnets and materials.

无髓牙牙体大面积缺损的修复是比较困难的，主要有牙本质钉、根管钉桩核等修复方法，均需要专门的工具器械和材料。

Results Dental CT software and three-dimensional reconstruction can display the overall view of jaw in implantation area; measure the height, width, bone density of the alveolar bone; demonstrate the relationship of alveolar bone and mandibular canal; and depict dentural spatial relation also.

结果 应用Dental软件及3D重建技术可以获得拟种植区颌骨的全景形态，局部牙槽骨的高度、宽度、骨质密度及牙槽骨与下颌管及上颌窦的关系，牙列的空间关系等。

It is at this stage that crowding can first appear as a result of the greater size of the permanent incisor teeth, mediated by relative tooth and diastema size, increase in intercanine distance through normal growth, and the extent of the inclination of the incisor teeth.

当牙萌发时因为尺寸较大而会出现初期的拥挤现象时，此阶段可由下列几种情况来解决：乳牙与间隙的尺寸、常生长下的犬齿间距增加、牙倾斜的程度。

Rats in experimental group were placed on the expansion appliance, inserting into the diastema between the first and second molars, then stick to molar lingual using light-cured resin for retention.

实验组采用0.014澳丝弯制双眼圈簧样扩弓装置，插入第一、二磨牙牙间隙，用光固化树脂粘结在大鼠磨牙舌侧进行固位；对照组安装未加力的同型扩弓装置。

Simmer. Results: Immunohistochemistry showed that the temporal and spatial expression patterns of AMELX, AMBN and ENAM in ameloblasts and enamel matrix were different. With the mineralization of enamel matrix, expression of AMELX decreased, but it weakly expressed in adjacent bone.

结果：免疫组化结果显示，三种蛋白在三种小鼠牙胚的成釉细胞、釉质、牙本质中的表达存在时空顺序差异，随着牙胚发育和釉质成熟，AMELX呈递减表达，而AMBN和ENAM则较恒定表达。

At this point the FIAR teeth closed time consistent, the point is that the machine sheet transfer at the ends of its teeth axis by buildings for some reason all fracture, thereby losing the regulation.

此时各叼牙的闭牙工夫不离分歧了，关头是该机械递纸叼牙轴两脚的靠刹不知什么来因全部断裂，从而获得了调度基准。

You should be flossing your teeth every time you brush in order to prevent plaque from building up.

每次刷牙的时候都要用牙线洁牙，这样可以防止牙菌斑形成。

Not only can make each kind of yellow teeth, black teeth, fumatory teeth pure white and bright, regarding the center mild tetracyclin tooth, the fluorine spot tooth also may achieve the ideal decolorization effect.

欧诺洁深层美白牙贴，应用革命性的目标色素同步加速激活技术，生成的丽齿新生态活性氧，能自由渗透进入牙釉质和牙本质中，提高牙齿活力，促进牙齿自身代谢，使牙齿在自身代谢过程中恢复洁白

Results the orifices of dentinal tubule were mostly occluded in Gluma samples and partly occluded in Bisblock samples. Resin layer were observed in Single Bond 2 samples.

结果 Gluma组牙本质小管开口几乎堵塞，Single Bond 2组牙本质表面形成厚的树脂层，BisBlock组牙本质小管开口部分堵塞。

When Gluma is applied in vivo, two reactions occur: first, GA reacts with part of the serum albumin in dentinal fluid, which induces a precipitation of serum albumin; and, second, the reaction of GA with serum albumin forms dihydropyridinium, whose disproportionation gives rise to free radicals, and the free radicals induce the polymerization of HEMA.

首次提出Gluma的脱敏机理为：当Gluma涂在过敏的牙本质上时，首先戊二醛交联牙本质液中的血清蛋白并产生沉淀；同时戊二醛与血清蛋白的反应产生二氢吡啶盐，它发生歧化反应，歧化过程中会有自由基产生，从而引发HEMA 聚合，生成另外一部分沉淀，这两部分沉淀共同堵住牙本质小管，起到了脱敏作用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。