查询词典 decayed teeth

The shape of the teeth is triangulum whose tip is the teeth cusp. The left and right teeth cusp oppose to each other forward to the pharyngeal cavity.

三角形牙齿的底部附着于腮弓上，三角形牙齿的尖即为牙尖，朝向内侧咽部，左右牙尖相对？

Medicine, said abnormal tooth eruption such as "viviparous teeth","new teeth""the birth of teeth" and so on.

医学上称这类萌出的异常牙为"胎生牙"、"新生牙""诞生牙"等。

Preventing teeth decay: People normally believe that the fluorine in the tea can increase the resistance of the teeth enamel to the erosion of the acid, so that the tea can prevent teeth decay. Actually, it is also because that the acacatechin can strongly refrain the Streptococus mutans.

预防龋齿：茶叶防龋作用，一般认为是茶中的氟，而使牙釉质对酸的侵蚀具抵抗力，但是儿茶素类能强烈抑制生龋菌也功不可没。

The using of cephalogram is limited because of the structure overlapping of the skull, jaw and teeth, for example the overlapping of the right side teeth and the left side make it difficult to distinguish the landmarks of posterior teeth.

颅颌骨牙齿之间影像的重叠使头颅定位x线片的应用受到了限制，比如牙列的重叠使后牙区的标志点难以辨认，所以对牙列的研究要借助牙〓模型。

Methods Nineteen bone impacted and unerupted teeth in 18 cases selected by orthopantomograph were scanned by 3DX-CT with 1.0 mm slice thickness. Images obtained by 3DX-CT (horizontally, sagittally, coronally) were analyzed after multi-plane reconstruction and 3D reconstruction including the angle of the bone axis impacted and unerupted teeth; maximum radius of the coronal teeth; distances between the tooth and the cortical bone around; distances to the neighboring tooth roots and nerve forum canal; the thickness of the bone tissue, etc.

对经曲面断层片筛选出的18例19枚埋伏牙进行牙科三维CT检查，扫描层厚1.0mm，重建后进行图像三维断面显示（包括水平位，矢状位，冠状位），对牙位图像进行分析及测量（包括埋伏牙牙长轴的角度，牙根弯曲度，牙冠的最大径，与骨皮质的距离，与邻牙根、神经孔／管的距离；骨质的厚度、高度等）。

Methods Orthodontic therapy was undertaken using straight-wire appliance, and then ceramic veneers were made in the treatment of 52 anterior teeth (21 patients),including malaligned teeth, rotated teeth, microdontia and diastema, partly with segmental defects and abnormal colors.

采用正畸直丝弓矫治技术和烤瓷贴面联合治疗52颗前牙（21例患者），包括错位、扭转、过小、牙间隙，或伴牙齿部分缺损、色泽异常。

Not only can make each kind of yellow teeth, black teeth, fumatory teeth pure white and bright, regarding the center mild tetracyclin tooth, the fluorine spot tooth also may achieve the ideal decolorization effect.

欧诺洁深层增美牙贴不仅能使各种黄牙、黑牙、烟茶渍牙达到洁白亮丽的要求，对于中轻度四环素牙、氟斑牙也可达到理想的脱色效果。

Not only can make each kind of yellow teeth, black teeth, fumatory teeth pure white and bright, regarding the center mild tetracyclin tooth, the fluorine spot tooth also may achieve the ideal decolorization effect.

欧诺洁深层美白牙贴，应用革命性的目标色素同步加速激活技术，生成的丽齿新生态活性氧，能自由渗透进入牙釉质和牙本质中，提高牙齿活力，促进牙齿自身代谢，使牙齿在自身代谢过程中恢复洁白

During en mass retraction of upper anterior teeth with straight wire technique, the length of anterior hook mainly influenced anteroposterior moving pattern of anterior teeth. As anterior hook increased from 0 to 6mm, labiolingual displacements of lateral incisor varied form lingual tipping to lingual translation and lingual controlling root movement, while 3-D displacements of other teeth only increased in account.

3直丝弓矫治技术整体内收上前牙时，牵引钩的长度主要影响前牙的矢状向位移方式：牵引钩长度增加至6mm的过程中，除侧切牙在唇舌向上由舌向倾斜运动变为舌向整体平移和舌向控根运动外，前牙的三维位移只有数量的增大，趋势基本保持不变。

After being loaded with horizontal retraction force at various height, displacement and stress distribution of anterior teeth was not well-distributed. Labiolingual displacement of incisors varied from crown lingual tipping to lingual translation and lingual controlling root movement, while canine mainly showed crown lingual tipping. The displacements of teeth increased with the length of hook but their moving tendency remained unchanged. Stress distribution in PDL was in accordance with teeth displacement.

2水平向后牵引力的作用点升高时，上前牙的位移和应力分布趋势各不相同：切牙的唇舌向位移由冠舌向倾斜逐渐变为舌向整体移动和舌向控根移动，尖牙则以冠舌向倾斜位移为主；前牙位移量随牵引力高度增加而增大，但位移趋势较为稳定；牙周膜应力分布与其位移趋势相一致。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。