牙

Methods The Chatillon force measuring instrument was used to record the retention of gold alloy casting Akers clasps when they were dislodged from the undercuts of different depths (0.25 mm, 0.375 mm, 0.50 mm and 0.75 mm) on the premolar and molar. All data were analyzed by ANOVA.

采用Chatillon测力仪，测定临床常用金合金铸造三臂卡在磨牙和前磨牙的0.25、0.375、0.50、0.75 mm倒凹深度上的固位力，同时进行统计学分析。

4The ratio of filling restorations is higher in highly citified and densely populated area.

四牙医医疗院所所在地区别与都市化位阶，愈都市化、人口愈集中，填补的发生率愈有上升的现象，乳牙情形又比恒牙严重。

Days after the extraction of the first premolars, the upper canines were subjected to coronally orthodontic extrusion movements.

后10天内提取的第一前磨牙，上尖牙受到冠正畸挤压运动。

Methods:The edentulous patients of senile males and postmenopausal females were selected.All the edentulous subjects were divided into two groups according to the degree of RRR of mandibles: well-rounded ridge group and atrophied ridge group; The BMD of mandibular angle and coxofemoral region (femoral neck,trochanter,and wards triangle) of all subjects were measured by dual energy X-ray absorptiometry.The BMD were compared between well-rounded ridge group and atrophied ridge group in the same sex group.

将60岁以上男性和绝经后女性无牙颌患者依据下颌剩余牙槽嵴吸收程度分为丰满组和非丰满组；采用双能X线吸收法，测量全部研究对象右侧髋部与左侧下颌角的骨密度；在同性别组内对比丰满组和非丰满组间下颌角和髋部骨密度的差别。

Based the above research, we chosen 48 cephalometric radiographs of skeletal classⅢocclusion (18-39 years old, ANB4°) and measured with computer assistant Delaire cephalometric analysis. The data were deal with ANOVA analysis through SAS9.0 statistical software. The research divided the cranio-maxillo-facial hard tissue structure feature of skeletal classⅢinto four classifications through Delaire cephalometric analysis including hypo-divergent, hyper-divergent, maxilla normal and glenoid fossa retrocession, nine parameters of four groups have significantly variability through ANOVA analysis(P.05),for example, anterior cranial base angle, sphenoidal angle, percentage of craniospinal area to cranial depth ,percentage of craniofacial area to cranial depth and so on.

在上述研究的基础上，首先选取48例骨性Ⅲ类错牙合畸形患者(18-39岁，ANB角4°)应用Delaire头影测量分析法进行测量，经SAS9.0行ANOVA分析，将骨性Ⅲ类错牙合畸形区分为低角型、高角型、上颌正常型和关节窝后移型四组，四组均数ANOVA分析发现九项分析指标的均数差异均有统计学意义(P.05)，如蝶鞍角、前颅基底角、颅面区比和颅颈区比。

Extended product lifecycle and common accessories means assured product availability and a better TCO for businesses. The hx2490 includes Integrated Wi-Fi (802.11b),Integrated Bluetooth wireless technology for wireless communication with other Bluetooth devices, Serial IR provides you with an easy method of exchanging data between Serial IR enabled devices. It also includes enhanced security protection with HP ProtectTools software secured by Credent Technologies.

使用周期超长，同时配备各种标准配件，确保产品实用性更强，性价比更高，适宜商业使用。hx2490配有集成Wi-Fi (802.11b)；集成蓝牙无线技术帮助轻松与其他蓝牙设备进行无线通讯；串行红外线能与任意具有串行红外线功能的设备进行数据交换；更配备由CREDANT技术提供保证的惠普ProtectTools保护工具，安全性能更为卓越。

Hsp27 has been shown to be a specific inhibitor of apopotosis, the enamel free area cells contribute to determine the outline of dentin at the cusped area.

3无釉区决定了牙本质在牙尖处的形态，而Hsp27 在无釉区的表达起着凋亡抑制剂的作用。

Objective:To report 2 cases of the rare disease-the dentigerous cyst on the floor of nasal cavity and explore etiology,the method of diagnosis and treatment.

目的：报道2例少见病———鼻腔底含牙囊肿，探讨其发病机制、诊断和鼻内镜下切除鼻腔底含牙囊肿的方法。

In past forty years, ongoing developments and advances have improved the reliability and predictability of dentinal adhesion.

在过去四十年来，牙本质黏著剂不断研究发展，从早期的黏合困难到现今有令人满意的表现，而牙本质的黏著机转与原理也有了较清楚的轮廓。

Results: The effects of occlusion of dentinal tubules occurred after treatment with 0.6 mol/L solution,the most tubules could be obs...

1.2mol/L浓度的溶液组效果与前一组无明显差异。结果：1mol/L浓度的碳酸氢钠溶液与牙体组织发生反应的生成物碳酸磷灰石能有效地堵塞牙本质小管

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。