牙形成

The results indicated that the histopathological changes of periodontum occured earlier and more seriously in diabetic rat. This demonstrates the promote effect of diabetes on the occurence and progression of the experimental periodontitis.

而糖尿病大鼠在同样的实验条件下，3周便出现类似的损害，9周时，出现深层组织的炎细胞浸润、牙槽骨吸收和深牙周袋形成，表明糖尿病具有缩短引起实验性牙周炎的时间和加重牙周组织破坏的作用，认为在建立大鼠实验性牙周炎模型的过程中引入糖尿病这一因素是一值得推荐的措施。

Objective: The purpose of this study is to establish a periosteal distraction model on rabbit mandiblar ramus, to observe the formation of newly formed bone and its structure in each phase after distraction of periostea, to observe the changes of periostea after being secondary to distraction forces, to investigate the possibility of osteogenesis by periosteal distraction in oral and maxillofacial region, and to study the possibility of a new restoration method of clincal alveolar and other bony defect.

目的：本研究在兔下颌升支建立骨膜牵张成骨模型，观察牵张骨膜后，在骨膜下新骨的形成，以及新骨在各个阶段的结构，同时观察了骨膜受到牵张力后的改变，研究骨膜牵张在口腔颌面部成骨的可能，为牙槽骨缺损及其他口腔颌面部骨组织缺损探讨新的重建方法。

The soil nutrient is detected in five shrub trees, namely Periploca sepium, Sophora davidii, Syringa pekinensis, Ostryopsis davidiana, Caragana intermedia and comparative Bothriochloa ischaemum community. We have evaluated comprehensively on soil nutrient index during the process of shrub community form and analyzed the linear correlation of soil nutrient factors.

以白羊草群落为对照，选取杠柳、狼牙刺、丁香、虎榛子和柠条5种乡土树种为研究对象，测定其土壤养分含量，计算灌木群落形成变化过程中的土壤养分指数(Soil Nutrient Index， SNI)，分析了各养分因子间的线性相关关系。

METHODS: By preparing tooth at damaged pontic or retainer of the porcelain fixed bridge in oral, shaping "core" retention form which analogy "keyway" form at both of retainers, and then make the porcelain partial crown with aperture of neighboring surface.

在口内破损的烤瓷固定桥桥体或固位体上备牙，形成与两端固位体类似&栓道&的固位的&核&，再制作邻面开口的烤瓷部分冠。

Embryo 8 weeks, the bilateral palatal premaxillary connected with the formation of alveolar ridge.

胚胎第8周时，双侧腭突与前颌相连形成牙槽嵴。

The tooth stone calculus is a kind of foreign body body to mouth cavity, it will continuously stimulate a tooth to organize for week, and will oppress a gum, influence blood circulation, germ infection make the tooth organized for week, cause gum inflammation's atrophying, formation tooth week bag bag.

牙结石对口腔而言是一种异物体，它会不断刺激牙周组织，并会压迫牙龈，影响血液循环，造成牙周组织的病菌感染，引起牙龈发炎萎缩，形成牙周囊袋。

Sound enamel surfaces were dematerialized in bacteria model in vitro. QLF was used to analyze the area of lesions, the loss of fluorescence and ΔQ on enamel surfaces after demineralization.

目的 通过在体外形成牙釉质光滑面早期龋损的恒化器龋病模型，评价定量光导荧光技术反映光滑面早期龋损矿物质含量变化的效果。

In the course of body development, tooth germs were induced to form by synergistic action of decisive factors and regulator factors.

在发育过程中，机体内各个决定因素与调节因素协同作用，促使牙胚形态形成。

In addition, there is little antibacterial activity, can be formed on the tooth enamel layer of sterile cell membrane components, help prevent tooth decay.

此外，还有少许的抗菌作用，可在牙齿的珐琅质上形成一层无菌细胞成分的薄膜，有助于防范蛀牙的发生。

In the group of lased 60s the dentin tubles appeared cracking and some dentin tubles were opened.

激光60秒组对根管壁有过分熔融，形成裂纹而且不能完全封闭牙本质小管。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。