乳牙

Shox2 express both in epithelia and mesenchyme of milk tooth, it express also in permanent tooth.

Shox2在乳牙上皮和间充质都有表达，在9周的恒牙上皮中，。

Pitx2 express in epithelia of both milk tooth and permanent tooth.

而Pitx2在整个乳牙上皮都有强烈的表达，在恒牙上皮中也有表达。

In 35 milk tooth samples permanent and milk tooth samples weredivided into 5 dose groups each, and irradiated with 60Co γ ray at dose rate of 0.48 Gy/min. Radi-ation doses of 5 groups were 0.30, 0.50, 1.00, 3.00 and 5.00 Gy, respectively.

将恒牙和乳牙各分成4和5个剂量组，用60Co γ射线照射各组样品，剂量率为0.48 Gy／min，各组累积剂量分别为0.30、0.50、1.00、3.00和5.00 Gy。

Female's Chi of kidney begins to be vigorous from about 7 years old, it behaves: milk tooth fall off gradually while permanent tooth grow gradually, the hair would be no longer so short slender and yellow, it turns to be thick and strong, black and bright.

女子七岁左右，肾中精气开始旺盛，其表现为：乳牙逐渐脱落，恒牙逐渐生长，头发由小时候的细短枯黄，逐渐变为粗长坚硬，黑亮有光泽。

The function of the space maintainer is to preserve arch length following the premature loss of a primary tooth. The space maintainer allows the permanent tooth to erupt unhindered into proper alignment and occlusion.

空间维持器的主要功能是要在乳牙提早丧失时，能维持牙弓的空间，以提供后续萌发的恒齿能有适当的排列及咬合。

In this study, 156 carious teeth from the children aged from 3~11years old were collected and divided into two groups,78 in each group.

收集3~11岁儿童乳牙龋病患者156例，随机分为两组，每组78例，分别采用Carisolv凝胶去腐和常规磨牙去腐，比较两组儿童的感受及治疗效果。

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。

Results The vinegar had demineralizing effect on deciduous enamel and decreased the surface microhardness of deciduous enamel.

结果 食醋能导致乳牙牙釉质钙溶出和表面显微硬度下降，随时间延长钙溶出减少，表面显微硬度降低的程度减弱。

Results The vinegar had demineralizing effect on deciduous enamel and decreased the sur-face microhardness of deciduous enamel.

结果 食醋能导致乳牙牙釉质钙溶出和表面显微硬度下降，随时间延长钙溶出减少，表面显微硬度降低的程度减弱。

The enamel surface microhardness was measured by a microhardness tester.results the vinegar had demineralizing effect on deciduous enamel and decreased the surface microhardness of deciduous enamel.

结果 食醋能导致乳牙牙釉质钙溶出和表面显微硬度下降，随时间延长钙溶出减少，表面显微硬度降低的程度减弱。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。