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The results suggested that nimodipine could influence the calcification of dentine, but had no obvious influence on the synthesis and secretion of dentine matrix.

实验结果表明，尼莫地平能够影响牙本质的矿化，但对牙本质基质的合成和分泌无明显影响。

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

According to former reports, with the high stress from lateral pressure obstruction, the gutta pertscha become the primary cause of tooth root diastema of pulpless teeth.

据以往的文献报道，由于侧方加压充填时产生的高应力，侧方加压充填牙胶尖是造成无髓牙牙根纵裂的最主要原因。

In the soft tissue measurements, the value of soft tissue facial angle and B'-Pos-FH in the first extraction group was less than those in the second extraction group significantly. After treatment all the patients had an increase in S-Ns-Pos angle, soft tissue facial angle, B'-Pos-FH and depth of mentolabial groove. At the same time, soft tissue convexity angle was diminished obviously. But the change was not significant between the two premolar extraction groups.

2在对软组织项目的测量中，治疗前第一前磨牙拔除组的软组织面角、颏沟倾角均小于第二前磨牙拔除组，治疗后2组均出现软组织面凸角减少，颏凸角、软组织面角、颏沟倾角、颏唇沟深度增加；但2组在各项测量项目的变化上无显著组间差别。

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 stabilization splint is effective for treating sleep bruxism in short term,but can not affect the sleep structure and the incidence of micro-arousal.

稳定牙合垫对夜磨牙患者的牙齿磨动有所改善，但对于睡眠结构和睡眠微觉醒的发生无影响。

Blab/c nude mice of 6-10 weeks old were also used. METHODS: Fresh lower mandible of 12 weeks abortion human embryo was separated; human molar tooth germ was isolated.

无菌条件下分离新鲜的12周流产人胚胎下颌，分离磨牙牙胚。

Beyond bleaching technique has no evident bad influence on vital tooth pulp, so it is a safe bleaching technique.

Beyond冷光牙齿漂白技术对活髓牙牙髓无明显不良影响，是一项安全可靠的漂白技术。

BACKGROUND: Studies demonstrated that incisor continuously growing is due to lack of epithelial root sheath formation. However, researches regarding whether receptor activator of nuclear factor κB ligand and osteoclast has correlation with continue root development is poorly understood.

背景：研究表明小鼠不断生长的切牙是由于切牙仅有颈环而无上皮根鞘的形成，但是破骨细胞分化因子核因子κB受体活化剂配体和破骨细胞与不断生长的牙根发育是否相关，目前研究较少。

The sharp week burning disease makes a tooth slice the clinical meaning for checking have:①Understand a bad tooth root-canal circumstance:Like root-canal number, thick thin, flection degree and have have no calcify, have have no inside absorb etc.

尖周炎症作牙片检查的临床意义有：①了解病牙根管情况：如根管数目、粗细、弯曲度以及有无钙化、有无内吸收等情况。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。