查询词典 teeth-gnashing

Scans of horses' teeth have shown how the soft pulp can extend closer to the surface of their teeth than suspected before, he told New Scientist, leading some vets involved with the centre to conclude that rasps should no longer be used so routinely to file down horses' teeth.

他在接受《新科学家》杂志采访时表示，对马齿扫描结果显示的柔软骨髓比以前想象的更靠近牙齿表面，医学图像科学与可视化中心的兽医因此得出这样一个结论，即不应再经常使用粗锉去锉开马的牙齿。

gap by law easy to use, easy to grasp, apply to the relatively high crown boneless resistance, resistance to a small adjacent teeth, the roots for the integration of the root or the root bifurcation cases, such as low lower the removal of impacted wisdom teeth; split crown law Requirements, flexibility in operation, more suitable for medium and low impacted significantly ditch and development, the root fork or a higher resistance to a larger adjacent teeth, and other cases, the lower-third-molar extraction.

结论增隙法操作方便、易于掌握，比较适用于高位、冠部无骨阻力、邻牙阻力小、根部为融合根或根分叉很低等情况下下颌阻生智齿的拔除；劈冠法要求条件高、操作灵活，比较适用于中、低位阻生且发育沟明显、根分叉较高或邻牙阻力较大等情况下下颌阻生智齿的拔除。

The heritability of maxillary arch length (71.26%) was higher than the mandibular one (31.33%). The intraclass correlation coefficients were similar in dental crowding between MZ and DZ, with the lower in DZ. Low heritability of dental crowding was found in both maxillary (4.73%) and mandibular (10.3%) teeth. Conclusion The maxillary teeth MD, the mandibular teeth MD and the length of maxillary dental arch are controlled under strong genetic factors.

上下颌牙量遗传度较高，上颌为69.97%，下颌为75.73%；上颌牙弓弧长的遗传度(71.26%)明显高于下颌(31.33%)；单卵双生子和二卵双生子上下颌牙齿的拥挤度的对内相关系数较为接近，二卵双生子略低，遗传度很低，上颌为4.73%，下颌为10.3%。

Born baby can brush your teeth, baby teeth can be used when the mother to the baby finger wrapped in gauze to wash gums, such as baby has teeth have set in after the baby finger toothbrush, can be set in the mother to the baby finger brush .

孩子一生下来就可以刷牙，孩子没牙的时候妈妈可以用纱布裹着手指给孩子洗牙龈，等孩子有牙了以后有套在手指上的孩子牙刷，妈妈可以套在手指上给孩子刷牙。

A long-toothed man with a livid face; One's face was blue and one's teeth stuck far out.; terrifying in appearance; with a green face and ferocious fangs; with a green face and jagged teeth like a saw; with hideous blue-black faces, showing their teeth

成语青面：靛青色的脸；獠牙：露在嘴外面的长牙。铁青的面孔上长着很长的牙齿。形容妖魔鬼怪狰狞可怖的面孔。例句他说；昨晚做了个可怕的梦；许多～的小鬼向他扑来；吓得他出了一身冷汗。

The swing-rod movable teeth drive has smaller friction and wear between kinematic pairs, smaller compressive stress between internal gear and movable teeth links, longer working life than push rod movable teeth speed reducer.

摆杆活齿传动与推杆活齿传动相比，运动副之间的摩擦、磨损小，活齿与中心轮之间的压应力小，工作寿命长。

I have read the book, the child's teeth should be the order, and each can be two-teeth, if not so long teeth, the child will be severely calcium deficiency, you should check the trace elements for children to do.

我看过书，孩子的出牙应该是有顺序的，并且每次应长两可牙，如果不是这样长牙，孩子就会是严重缺钙，你应给孩子做微量元素检查。

objective to evaluate clinical effect of the handling protaper nickel-titanium rotary instruments in preparation of canals of posterior teeth.methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling protaper rotary instruments using step-down technique,and by k files using step-back technique for control.all teeth were obturated with lateral condensation methods.the efficiency of preparation was analyzed with ra-diographs before and after operation.results no transportation,apical blockage and ledge were found in test.the technique could keep canals smooth.there were two ledge,one instrument fracture and nine transportation in control.the operative time was shorter and post treatment pain seldom occurred in handling protaper group.conclusion the handling protaper niti rotary instruments can prepare the canals effectively and safety.after the preparation,the canals could be easily washed,sterilized and filled.it is an efficient instrumentation method for posterior teeth's canals and be used widely.

目的 评价手用protaper预备后牙根管的临床效果。方法选取患有牙髓炎和根尖周炎的后牙96例，随机分成试验组和对照组各48例，试验组用手用protaper多锥度镍钛旋转器械逐步伸入法预备根管，对照组用k锉，逐步后退法预备根管，两组均用侧向加压充填法充填根管，根据治疗前后的x线片，评价后牙根管预备效果。结果试验组无根管偏移、根尖阻塞、台阶，且根管壁平滑流畅，无器械折断等并发症发生。对照组有2例台阶形成，器械折断1例，根管偏移9例。试验组操作时间短且术后疼痛轻微。结论应用手用protaper预备后牙根管快速、安全，成形效果好，易于根管冲洗消毒及填充，可视为临床上预备后牙根管的有效方法。

Results:With 2 years following study,in the cement screw post group 50 of total 57 teeth were good, 2 teeth failed for root fracture、2 teeth failed for post fracture、3 tooth failed for crown loose .The rate of success is 87.72％.

结果：随访两年，其中使用螺纹桩修复57例，良好50例，松动脱落3例，钉折断2例，患牙根折2例，成功率为87.72％。

Methods:Choose 126 anterior teeth of 112 patients at random,age from 21 to 46, 56 teeth were restored with cement screw post and 70 teeth were restored with glassfiber post,then all cases were restored with porcelain fused metal crown.

随机选取21—46岁的病例112例共126颗前牙进行即刻修复，其中56个牙制作螺纹桩核，70个牙制作纤维桩核，桩核完成后均行烤瓷全冠修复。

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。