In addition, root resorption of deciduous teeth is not continuous, but discontinuous, intermittent stage in the absorption, the absorption of root surface can be deposited new cementum, may also be near the new bone.

另外99操的在线视频，乳牙的牙根吸收不是持續(xù)不斷的，而是間斷的老熟女毛多一区二区，在吸收間歇階段国产一级视频69欧美一级，被吸收牙根的表面又可以沉積新的牙骨質，附近也可產(chǎn)生新的牙槽骨国产毛多水多女人A片。

If this repair over-active, resulting in too many people can make the alveolar bone and cementum of the joint between the solid, deciduous teeth can no longer continue to absorb.

如果這種修復作用過分活躍久久丝袜美腿国产精品，產(chǎn)生過多的牙槽骨人就可能使牙槽骨和牙骨質之間發(fā)生固著聯(lián)合，乳牙牙根就不能再繼續(xù)吸收8x8cmo永久免费视频。

Extreme malnutrition, cretinism, congenital syphilis is a late lead to the causes of deciduous teeth.

極度營養(yǎng)不良欧美天天摸天天添人人喊、呆小病人人操人日免、先天性梅毒也是導致乳牙晚出的原因。

Time of eruption of deciduous teeth have a lot of individual differences.

乳牙的萌出時間有很大的個體差異日韩黄片毛片。

This is a physiological phenomenon, which is replacing the so-called deciduous teeth.

這是一種生理現(xiàn)象91免费在线，這就是所謂的乳牙退換。

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

只有這樣亚洲三级片网址，才能保持乳牙的健康无码精品久久久久久天天影视，并且才可能有未來恒牙的健康。

Distribution of Ca content in enamel and dentin in deciduous teeth was investigated.

釉質和牙本質中鈣含量與齲病無非常明顯的相關關系日本XXWWXXWW视频免费。

Child's deciduous teeth in the 2-year-old half-a-chai, to 6-year-old, in the final after a deciduous, up and down about a total of four laniary grow, this is the first eruption, the use of the oldest permanent teeth, which four of six age of teeth will not change.

孩子的乳牙在2歲半出齊黄片一级三级高清黄色视频，到6歲左右，在最后一顆乳牙后面国产精品综合日本欧美，上下左右共長出四個大牙尤物二区在线视频，這是萌出最早、使用最久的恒牙国内偷拍专区，這四顆六齡牙以后不會再換国产操屄视频。

Birth, the permanent teeth in the deciduous tooth germ had been under, with the exception of the first molar (ie, age 6 teeth) in the neonatal period has begun to calcification, the calcification of permanent teeth is carried out in infancy, Therefore, the infant not only to protect the deciduous teeth, but also in order to obtain a fit and lay the foundation for permanent teeth.

嬰兒出生時，恒牙的牙胚就已在乳牙之下在线观看国产理论播放网站免费视频，除第一磨牙（即6齡牙）在新生兒時期已開始鈣化外超碰欧美人妻在线，一部分恒牙的鈣化是在嬰兒期進行的，因此亚洲特级黄a，嬰兒期不僅要保護好乳牙欧美日韩经典自拍视频在线播放，還要為獲得一副健美的恒牙奠定基礎。

As the permanent tooth germ in the jaw with growth, development and direction to the dental occlusal surface of the mobile, so that the roots of deciduous teeth being absorbed, the gradual loosening of deciduous teeth, and finally resulted in loss.

由于恒牙牙胚在頜骨內(nèi)的生長无码精品A∨在线观看中文免费、發(fā)育及向牙齒咬合面方向的移動av天堂。，使乳牙根部組織被吸收，乳牙逐漸松動成年人小视频在线观看免费，最后造成脫落自拍偷拍网第一页。