牙齿发育

牙齿发育或称牙生成（英语：odontogenesis），是胚胎细胞发育、生长成为牙齿，最后长于口腔内的复杂过程。虽然许多物种都有牙齿构造，但它们的牙齿发育普遍和人类相同。人类牙齿必须经过良好的胚胎发育阶段，才能发展出健康的口腔环境、牙釉质、牙本质、牙骨质（英语：cementum）及牙周组织。乳齿在六至八周之间开始形成，恒齿则是第二十周时开始生长、逐渐取代乳齿^[1]，错过这段时间牙齿便不会发育。

X光照片由右下方拍摄，左起：第三、第二以及第一臼齿，各在不同发育阶段

注释

1. Ten Cate, A. R. Oral histology: development, structure, and function. St. Louis: Mosby. 1998: 81–102. ISBN 0-8151-2952-1.

参考资料

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外部链接

• 生物人类学与古代人DNA （页面存档备份，存于互联网档案馆）
• 发育中牙齿的不同基因数据库 （页面存档备份，存于互联网档案馆）
• 兽医组织学，Dr. Thomas Caceci