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歲半出齊啦啦啦www观看在线下载，到6歲左右人人欧美乱码专区视频免费，在最后一顆乳牙后面，上下左右共長(zhǎng)出四個(gè)大牙超碰123，這是萌出最早理论片网址、使用最久的恒牙，這四顆六齡牙以后不會(huì)再換又大又粗又长又硬好爽国产。

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(shí)性插图真人无遮挡，恒牙的牙胚就已在乳牙之下，除第一磨牙（即6齡牙）在新生兒時(shí)期已開始鈣化外欧美性爱生活，一部分恒牙的鈣化是在嬰兒期進(jìn)行的澳门一级A片免费播放，因此，嬰兒期不僅要保護(hù)好乳牙久久精品视频30，還要為獲得一副健美的恒牙奠定基礎(chǔ)日韩欧美人妻精品。

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(zhǎng)、發(fā)育及向牙齒咬合面方向的移動(dòng)日本XXWWXXWW视频免费，使乳牙根部組織被吸收黄片一级三级高清黄色视频，乳牙逐漸松動(dòng)，最后造成脫落中国黄色一级A片免费看视频。

deciduous teeth：乳齒

\\"蛻膜性胎盤\\",\\"deciduous placenta\\" | \\"乳齒\\",\\"deciduous teeth\\" | \\"煎劑\\",\\"decoction\\"

ankylosed deciduous teeth：乳牙粘連

乳牙下沉:submerged deciduous teeth | 乳牙粘連:ankylosed deciduous teeth | 乳牙滯留:retained deciduous teeth

deciduous teeth, baby teeth：乳牙

牙弓 dental arch | 乳牙 deciduous teeth, baby teeth | 恒牙 permanent teeth