查询词典 front teeth

After being loaded with horizontal retraction force at various height, displacement and stress distribution of anterior teeth was not well-distributed. Labiolingual displacement of incisors varied from crown lingual tipping to lingual translation and lingual controlling root movement, while canine mainly showed crown lingual tipping. The displacements of teeth increased with the length of hook but their moving tendency remained unchanged. Stress distribution in PDL was in accordance with teeth displacement.

2水平向后牵引力的作用点升高时，上前牙的位移和应力分布趋势各不相同：切牙的唇舌向位移由冠舌向倾斜逐渐变为舌向整体移动和舌向控根移动，尖牙则以冠舌向倾斜位移为主；前牙位移量随牵引力高度增加而增大，但位移趋势较为稳定；牙周膜应力分布与其位移趋势相一致。

Methods After 3 dimensional measurement,data process and making model of a edentulous model, artificial teeth and the maxillomandibular bite plate, on the position of centric relation, the artificial teeth were arranged according to the principle and demand of the complete denture's teeth arrangement.

近年来，随着三维(3D)测量技术和计算机辅助设计(computer aided design，CAD)软件的发展，测量并记录口腔软、硬组织和颌位关系的3D方法迅速提高，计算机辅助设计与辅助制作系统已广泛应用于口腔医学的临床和教学。

Now many manufacturers in order to increase its power in its teeth, dental and dental pad that is similar to the surface of the plinthitic "", such as the radiograph ruled in Heidelberg and teeth of clishion, prodenia, Roland sandbiasting teeth pads, gaobao sulbur, clishion, and so on rubber dental materials are quite good, but in use for some time also fails as a result of wear and tear.

此刻许众制造商为了补充叼牙的叼力，都在牙片和牙垫上安插了近似&网纹&的暗地，如海德堡的牙片屈纹与牙垫平纹、曼罗兰的喷砂牙垫、矮不废的含橡胶牙垫等等，其质料都是很是不错的，但在搁置一段工夫后同样也会因磨损而爆发障碍。

The follow-up periods were various from 6m to 21m. The apical MTA barrier technique was used to manage pulpless permanent teeth with incomplete root formation. The postoperative radiographs showed complete repair of periradicular tissue in 5 of 7 teeth and improvement obviously in other 2 teeth. Only one case (1 tooth) had a 3mm periodontal pocket in four perforation repair cases. The lesion at the perforation sites was improved obviously.

追踪观察时间为6-21月。4例穿孔修补的病例，均为延迟修补，除一例为根尖1／3处的病理性吸收外，其余患牙的穿孔部位位于牙根的冠1／3或根分叉处，一例6m复查时有3mm的牙周袋形成，其余患牙骨吸收暗影均明显缩小。7例根尖发育不全并无髓牙的病例均为成人，5例根尖暗影完全消失，2例明显缩小。

When the teeth ratio of planetary gear is greater than 2 and transmission ratio is less than 1,the transmission will be speeded up from right to left.When the teeth ratio is less than 2,transmission will be slowed down from right to left,and when the teeth ratio is becoming close to 1,transmission ratio will trend towards infinity theorically.

当行星齿轮的齿数比大于2时，传动比小于1，传动自右到左为增速；当齿数比小于2时，传动自右到左为减速；当齿数比趋向1时，传动比理论上趋向无穷大。

If none of these worked after heat discolouration is still not resolved, then we may have to consider the question of teeth, we should clean teeth pad radiograph, and preferably take off your spring cleaning some of our leading machine manufacturers only know that the cleaning teeth cleaning pad, I wonder if in fact the radiograph.

如果这些都怠工功之后冷还来操纵处置变色题目，那么我们不定给思考一下牙的题目了，我们不该冲洗牙垫牙片，而且最坏是摘掉弹簧举行冲洗，我们有些厂家的不发机只懂得冲洗牙垫，不懂得冲洗牙片原来这样使不差的。

METHODS: In all the 283 teeth, the root canal of 196 teeth were obturated with paste zinc oxide- eugenal; the other 87 teeth were obturated with Vitapex.

选择283 颗乳牙慢性根尖周炎伴窦道的患牙， 196 颗用氧化锌丁香油糊剂充填， 87 颗用Vitapex 充填。

Scans of horses' teeth have shown how the soft pulp can extend closer to the surface of their teeth than suspected before, he told New Scientist, leading some vets involved with the centre to conclude that rasps should no longer be used so routinely to file down horses' teeth.

他在接受《新科学家》杂志采访时表示，对马齿扫描结果显示的柔软骨髓比以前想象的更靠近牙齿表面，医学图像科学与可视化中心的兽医因此得出这样一个结论，即不应再经常使用粗锉去锉开马的牙齿。

gap by law easy to use, easy to grasp, apply to the relatively high crown boneless resistance, resistance to a small adjacent teeth, the roots for the integration of the root or the root bifurcation cases, such as low lower the removal of impacted wisdom teeth; split crown law Requirements, flexibility in operation, more suitable for medium and low impacted significantly ditch and development, the root fork or a higher resistance to a larger adjacent teeth, and other cases, the lower-third-molar extraction.

结论增隙法操作方便、易于掌握，比较适用于高位、冠部无骨阻力、邻牙阻力小、根部为融合根或根分叉很低等情况下下颌阻生智齿的拔除；劈冠法要求条件高、操作灵活，比较适用于中、低位阻生且发育沟明显、根分叉较高或邻牙阻力较大等情况下下颌阻生智齿的拔除。

The heritability of maxillary arch length (71.26%) was higher than the mandibular one (31.33%). The intraclass correlation coefficients were similar in dental crowding between MZ and DZ, with the lower in DZ. Low heritability of dental crowding was found in both maxillary (4.73%) and mandibular (10.3%) teeth. Conclusion The maxillary teeth MD, the mandibular teeth MD and the length of maxillary dental arch are controlled under strong genetic factors.

上下颌牙量遗传度较高，上颌为69.97%，下颌为75.73%；上颌牙弓弧长的遗传度(71.26%)明显高于下颌(31.33%)；单卵双生子和二卵双生子上下颌牙齿的拥挤度的对内相关系数较为接近，二卵双生子略低，遗传度很低，上颌为4.73%，下颌为10.3%。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。