查询词典 dentin

The purpose of the study was to evaluate quantitatively PDLC attachment and proliferation to periodontally diseased human cementum and dentin after demineralizing with minocycline- HCl and EDTA.

以往关于用四环素族药物处理根面的研究，均是以牙本质为载体，而临床上牙周手术后与牙周膜细胞接触的界面主要是牙骨质表面。

Results Fibronectin existed in dental pulp and predentin, and also in space between the wall of dentinal tubule and process of odontoblast in mature dentin. They were mostly distributed in odontoblast layer and round blood vessels and nerves. In the crown pulp, integral optical density, length density and volume density were 0.49±0.33,38.44±20.7 and 24.56±10.8 respectively.

结果 纤维粘连蛋白免疫反应普遍存在于牙髓、前期牙本质和成熟牙本质的牙本质小管与成牙本质细胞突起，以成牙本质细胞层，牙髓血管与神经周围最为丰富。

Objective: To compare the microtensile bond strengths of adhesive systems to human dentin prepared with two kinds of diamond burs.

目的：比较两种不同表面粒度的金刚砂车针进行牙体预备后对牙本质粘结强度的影响。

When the self-etched adhesives (Contax, Clearfil TRI-S Bond) were used for the surface treatment of sclerotic dentin, the results of thermal circlings showed that, for Contax, 5,000 times thermal circlings did not weakened the bond strength, while the bond strength after 10,000 times thermal circlings significantly lower than that before circling; for Clearfil TRI-S Bond, 5,000 times thermal circlings significantly weakened the bond strength, while 10,000 times thermal circlings weakened it further.

选择自酸蚀系统粘接剂Contax和Clearfil TRI-S Bond粘接非龋性硬化牙本质，分别测量冷热循环0次，5000次及10000次时的微拉伸粘接强度，结果显示：Contax粘接剂冷热循环5000次后粘接强度无明显下降，而循环10000次后粘接强度明显下降；Clearfil TRI-S Bond粘接冷热循环5000次后粘接强度明显下降，循环10000次后粘接强度进一步下降。

After transplanted in nude mouse for 8 weeks, DAC-MSCs can regenerate cementum-like structures and dentin-like structures. At the same time, we used limiting dilution assay to screen monoclonal cells from DAC-MSCs and discovered two kinds of phenotype cells: one is osteogenesis type, and the other is fibro singtype.

结果显示：牙根发育期根尖复合体来源间充质干细胞为异质性；具有显著的&胚胎性&组织特征：表现出极高的增殖活性、克隆形成能力和体外多向分化能力；在体内可以异位形成类牙骨质和类牙本质样矿化结构。

Titanium alloy and dentin specimens were bonded with KetacTM Cem Easymix ionomers. All bonded specimens were stored for 24 hours at 37 ℃. The microtensile bond strength was measured through the use of universal testing machine. The fractured surface of titanium alloy was observed under scanning electron microscopy.

利用Ketac TM Cem Easymix玻璃离子水门汀将打磨后的钛合金铸件和牙本质粘接，经 37 ℃恒温水浴24 h后，用万能试验机检测其微拉伸粘接强度，然后在扫描电镜下观察粘接断面形态。

Histopathologic examination showed there was no irreversible pulp injury when the dentin surfaces were irradiated by Nd﹕YAG laser with 33 J/cm2 and 56 J/cm2 output (output : 1 W). Vessel dilatation and exudation were found when lased under 111 J/cm2 output.

病理组织学检查显示：在激光功率为1 W的条件下，33 J/cm2、56 J/cm2的激光能量密度不会对牙髓组织造成明显影响，111J/cm2时个别牙齿会出现血管扩张、渗出的现象；牙髓反应以3 d观察期最明显。

However, enamel and enameloid are significantly different in development, and dentin shows many histological variations; hence their evolution has been intensively studied. Nevertheless, their genetic basis has been revealed only in tetrapods.

这两类动物的釉质和釉质瘤发育是截然不同的，牙本质发育在组织学上差异也较大，关于这两类动物进化方面的研究很多，但涉及遗传基础的研究仅限于四脚动物。

A hard, smooth, yellowish-white substance composed primarily of dentin that forms the tusks of the elephant.

象牙质主要由象牙质组成的坚硬、光滑、黄白色的物质，这种物质构成了大象的牙齿

At last, in Ansys 9.0 software, by Boolean operation, different parts of the crown （ enamel, dentin and pulp cavity） were separated, and the 3D meshes were created respectively.

再将模型导入Geomagic7软件中进行精修和细化，形成有限元分析软件可识别的实体三维模型，最后，将牙体组织的三维实体模型在Ansys9.0软件中进行布尔运算，区分出釉质、牙本质及髓腔系统，并分别进行了网格划分。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失