查询词典 teeth-grinding

Before teeth are clean, but over the past six months found that the surface of the teeth and the root edge of black things, be able to pull down, I have very carefully brush your teeth, but still, I ask what this is?

以前的牙齿很干净，但是近半年发现牙齿的面上以及牙根边缘有黑色的东西，能够抠下来的，我已经很仔细的刷牙了，但是还是有，请问这个是什么？

Not only in the gums teeth stains teeth on the edge of the surface there, and sometimes the neck or root in the teeth also has.

牙渍不仅在牙龈边缘上的牙面上有，有时在牙颈部或牙根上也有。

Results: Among the 47 cases, 33 cases were teeth pulpless tissue including 14 endodentically treated teeth and 14 cases were vital teeth with periodontitis, cracked tooth and occlusal traumatism.

结果：牙冠纵折多见后牙，以上颌第一磨牙为多见，其中无髓牙33例，牙折裂前有近一半曾作过根管治疗，活髓牙14例，存在不同程度的牙隐裂，牙周炎和咬合创伤。

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。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。