牙形成

Methods A retrospective study was performed in a group of unoperated bilateral complete cleft lip and palate patients who received simultaneous primary palate repair and alveolar bone grafting.

按照唇腭裂序列治疗的现代概念，腭裂修复应在语音发育开始前完成，一般在出生后 9～ 12个月进行，而齿槽嵴裂植骨修复术的最佳时间应在尖牙未萌出前，牙根形成 1/ 2～ 2 / 3，患者年龄为 9～ 11岁[1] 。

One of the important cariogenic virulence factors of these organisms is their ability to form biofilms.

变形链球菌是公认的主要致龋菌，其重要的毒力因子之一就是在牙表面形成生物膜。

These same parts of smoking also cause cavities and yellowing of teeth to form easier.

这些相同的部分，吸烟也导致蛀牙和泛黄的牙齿，形成更容易。

If the posterior teeth or dental prostheses are missing, the cheeks may be sunken, producing a prematurely aged or cachectic appearance.

如果后牙或义齿缺失，颊部会凹陷而形成早老的或恶病质样的面貌。

The relative cell groth rate of L929 cell represented the proliferation of cells on materials with respect to control over time. The result showed that cytotoxicity of thermo-sensitive cell culcure dish was none or little,which can be used for lab use.Additional cell culture was performed with two types of celland cell sheets detachment were observed by reducing the culture tempareture after the confluently growth of the two types of cells.

进一步利用两种不同的细胞永生化的成牙本质细胞系和人牙周膜细胞在接枝有PNIAPm的培养皿上进行培养，观察到细胞可以正常贴壁，生长并增殖，并且在形成连续的细胞层之后，通过降低温度，获得了完整的细胞层结构，结合前两部分实验结果，证实了利用等离子体预处理和紫外线照射接枝制备温敏性培养皿的可行性，为后续研究提供了实验基础。

Results :①The MVs were formed by osteoblast of the secret type、dentinoblast and process;② There was a mature process of the MVs in the extracellular matrix.The appearance of the hydroxyapatite was a major mature feature;③ HAP formed initially in the MVs entered into collage matrix and eventually mineralized;④ The shifting sign of HAP from MVs to the surface of collage fibril was observed.

结果：①MVs是由分泌型成骨细胞、成牙本质细胞及其突起芽生进入胶原基质；②MVs在细胞外胶原基质中有一个逐渐成熟的过程，并以羟基磷灰石（hydroxyapatite，HAP）晶体的出现为其主要特征；③HAP在MVs内形成、增多，最终进入胶原基质并进一步沉积、钙化；④部分胶原原纤维表面沉积的HAP 晶体与MVs分泌的晶体有明显的移形迹象。

He walked through the orange orchards that formed shady deep caverns through the countryside with their ancient conduits splashing water out of the fanged mouths of great snake stones carved before Christ.

他穿过柑桔林，到处都是柑桔形成的一眼望不列尽头的幽洞似的绿荫道，到处都是公元前用石头雕成的巨蛇样张着大嘴、露着毒牙的古老的水管，水哗啦啦地从蛇嘴里向外流淌。

The preformed dental crowns also include a hardenable composition that has sufficient malleability such that the side-generic external shape can be formed into, e.g., a left-side specific or right-side specific adjusted external shape.

该预制牙冠还包括具有足够充分可煅性的可硬化组合物，从而所述侧面通用外形可以被形成为例如左侧特定或右侧特定调整的外形。

In this study, we isolated a clonogenic cells from adult human dental pulp. They produced calcified nodules in differentiation inducive medium. When transplanted into immunocompromised mice, they generated a dentin-like structure and human odontoblast-like cells.

主要结论： 1。从成人健康阻生齿中分离到的部分细胞具有一定的克隆形成能力，在诱导剂的作用下，还可向脂肪细胞、肌细胞及成牙本质细胞方向分化，具有多向分化能力，符合干细胞的特性。

Medicines for systemic osteoporosis are effective in ameliorating maxillomandibular bone structure, delaying alveolar bone resorption and promoting new bone formation.

针对全身骨质疏松治疗的药物能有效改善颌骨骨质结构，减缓牙槽骨吸收，促进新骨形成。

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。