乳牙

The hypoplasia or aplasia of root cementum was thought to be the prime etiological factor in the early loss of primary teeth.

认为牙根牙骨质形成不全或发育不良是该病患儿乳牙过早脱落的根本原因。

When a Chinese child loses a baby tooth, it doesn't get tucked under the pillow for the tooth fairy.

当中国孩子掉了乳牙时，牙齿不被放在枕头底下来吸引牙仙女。

In children's dental clinics are full of children in urgent need of treatment, although the standard of living of the people than ever before to upgrade, more and more parents understand the importance of primary teeth of children are willing to make every effort to safeguard children's oral health, but I do not know how to proceed, making more and more children aged 2-4 to be the so-called "baby bottle tooth decay sexual."

在儿童牙科门诊中充满了急待治疗的小朋友，虽然国人的生活水准较以往提升，越来越多的家长也能了解乳牙对小朋友的重要，愿意尽力来维护孩子们的口腔健康，却不知如何着手，使得越来越多2—4岁的儿童得到所谓"奶瓶性蛀牙"。

Those are replaced by 42 permanent teeth between the ages of 2 and 7 months.

而它们长到2到7个月的时候，这些乳牙就会换成42颗恒牙。

The only way to maintain the health of deciduous teeth and permanent teeth may have future health.

只有这样，才能保持乳牙的健康，并且才可能有未来恒牙的健康。

Objective To research the deciduous enamel demineralization caused by vinegar.

目的 研究食醋对乳牙牙釉质的脱矿作用。

Aim. This study examined the effect of etching time on the microtensile bond strength to AI-affected primary dentine.

目的：测量不同酸蚀时间下， AI 的乳牙牙本质的微拉伸粘结强度的变化。

It is at this stage that crowding can first appear as a result of the greater size of the permanent incisor teeth, mediated by relative tooth and diastema size, increase in intercanine distance through normal growth, and the extent of the inclination of the incisor teeth.

当牙萌发时因为尺寸较大而会出现初期的拥挤现象时，此阶段可由下列几种情况来解决：乳牙与间隙的尺寸、常生长下的犬齿间距增加、牙倾斜的程度。

Objective To establish and develop a quick, special and sensitive method for quantifying carigenic strains and assessing the relationship between the level of four-species cariogenic pathogens in dental plaque and dmfs index.

目的 建立定量检测致龋菌的快速、敏感、特异的方法。分析牙菌斑中主要致龋菌数量与乳牙龋失补牙面指数的关系。

In summary, we established a new model for investigating the functional reconstruction capability with dental pulp stem cells transplantation in vivo. We also revealed dental pulp stem cells from one deciduous tooth can be expanded in vitro which possibly can be utilized for teeth replacement therapy in the future.

总括来说，本研究建立了一个新的研究牙髓干细胞应用於牙齿再生治疗的模式，我们发现从乳牙中可以分离出牙髓干细胞，未来并可进一步应用来修复牙齿的缺损。

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。