查询词典 incisors

Objective To investigate the therapy of malocclusion which accompanied with congenital missing lower incisors.

目的：探讨伴有下切牙先天缺失的错牙合畸形的临床治疗方法。

The 3-D FE model of the maxilla and upper incisors of this study had proved to be precise and effective, and could be applied in the stress-strain analysis of the maxilla and teeth.

本研究建立的上颌骨和上切牙的三维有限元模型较为理想，可以作相应的颌骨、牙齿的生物力学分析；其建模技术较为独特而精准可行。

Based on this background, maxillary central incisors was prepared as residual roots model, the materials which has the similar physical properties and capabilities as that of the alveolar bone and periodontal membrane respectively were chosen.

基于上述情况，本实验以人离体上中切牙制备实验模型，以力学性能近似的材料模拟牙槽骨、牙周膜和桩冠修复后的上前牙，制作与上前牙口内受力角度相同的夹具及压力头，形成加载测试系统。

Therefore, in a newly designed three-dimensional cell culture system that fulfils the conditions necessary for odontoblast differentiation (Kikuchi et al. 2002), we examined whether dental papilla cells in rat mandibular incisors could differentiate into tubular dentine-forming cells.

本实验我们设计了另一种新的三维培养模型，来研究成牙本质细胞的分化，并观察大鼠下切牙牙乳头细胞能否形成管状牙本质。

Attentive mother to know her secret: the new two big front teeth grow super-large, such as general as the iron door, a big laugh grin incisors on the occupied people's attention, the new understanding of the students make fun of her, no one can no longer said she, like "Princess" has been.

细心的妈妈知道她的秘密：换牙后新长出的两颗大门牙超级大，像把门的铁将军一样，一咧嘴笑大门牙就占据了人们的视线，新认识的同学取笑她，再也没人说她像"公主"了。

The most common torque need for the upper incisors during orthodontic treatment is increased palatal root torque.

最常见的扭矩需要切牙正畸治疗中增加腭根扭矩。

Why was palatal root torque increased for the upper incisors in the MBT system?

为什么腭根扭矩增加为切牙的主战坦克系统？

The three groups were loaded and analyzed under the same loading according to the mean value of the bite force of incisors. RESULTS:(1)The maximum stress of dentin in group A was twice higher than that in group B. The maximum primary stress, minimum primary stress and maximum shear stress of group A were respectively 236.35, 228.83 and 218.05 percent of those in group B. The difference of maximum stress values of group B and group C was neglectable.(2) The maximum stress distribution of dentin in group A and group B was quite different (the stress was concentrated in labial and lingual side of the cervical dentin in group A, otherwise in group B it was concentrated in the area around the alveolar and the labial and lingual side of the dentin which was opposite to the tip of the cast metal post and core). The maximum stress distribution of dentin in group A and group B was almost the same.

结果：(1)从牙本质的应力大小来看，A组中牙本质最大应力值比B组中牙本质最大应力值增大了1倍以上（最大主应力、最小主应力和最大剪切应力A组分别是B组的236.35%、228.83%和218.05%），而B组与C组的牙本质最大应力值相差极小；(2)从牙本质的应力分布位置来看，A组与B组的牙本质最大应力分布位置相差甚远（A组主要集中在牙颈部唇舌侧肩台部的牙本质上，B组主要集中于牙槽嵴顶附近及铸造桩核尾端相对应的唇舌侧的牙本质上），而B组与C组的牙本质最大应力分布几乎在同一位置。

Objective To investigate the clinical effect of one-time root canal therapy and reattachment of permanent incisors with crown fracture.

目的：观察恒切牙外伤冠折后行一次性根管治疗与断冠再接术的临床效果。

Objective:To investigate the effects of extraction to the morphology of symphysis and the relationship between lower incisors retraction and the changes of the symphysis by evaluating the cephalograms of patients with Angle Class II Division 1 malocclusion.,in order to provide a reference to clinical treatment.

目的： 通过对安氏Ⅱ~1类错拔牙矫治前后的X线头影测量分析，观察矫治前后颏部形态的变化，并探讨下切牙内收量与颏部厚度和倾斜度变化之间的相关关系，以期为临床矫治设计提供一定的参考。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。