This amazing structure is created by two types of cells: ameloblasts that secrete enamel and odontoblasts that secrete dentin.

分泌牙釉的成釉细胞以及分泌牙本质的成牙本质细胞。

A different cocktail pushed the stem cells to become odontoblasts instead.

而另一种混合使干细胞分化为成牙细胞。

Some become odontoblasts — these cells make dentin, the tough, fibrous core of the tooth.

一些变成成牙质细胞——这些细胞形成牙质，坚硬的纤牙质，是牙齿的核心部分。

The outer wall of the pulp, contains odontoblasts which are cells that secrete a bonelike substance called dentin, which is filled with protein and minerals.

牙髓外层有成牙质细胞，它们可以分泌一种叫牙本质的骨，其中充满了蛋白质和矿质。

They also assessed another type of cell called odontoblasts.

他们还评估了另一种被称为成牙细胞的细胞。

The odontoblasts have long processes, or arms, that lay within tiny tubules in the dentin - like an octopus sticking it's arms through a block of cement.

成牙质细胞有长长的突起，或者说长臂，伸入牙本质中的小管，就像章鱼的触角伸进水泥块被困住一。

Having both cell types seemed to be crucial: when odontoblasts were present alongside ameloblasts, genes coding for enamel proteins were more strongly expressed than with ameloblasts alone.

拥有这两种细胞类型似乎是至关重要的: 当成牙釉质细胞和成釉细胞同时存在时，编码牙釉质蛋白的基因比单独存在成釉细胞时表达得更强烈。

Odontoblasts use a more complex process, but unlike ameloblasts, they stick around, continuing to secrete dentin throughout your life.

成牙本质细胞需要更复杂的过程，但与成釉细胞不同，它们不会消失，会在我们有生之年继续分泌牙本质。

As they form teeth, odontoblasts move inward, while ameloblasts move out and slough off when they hit the surface.

在形成牙齿时，成牙本质细胞向牙内部扩散，成釉细胞向牙的外部生长，并在抵达牙齿表面时脱落。

Some become odontoblasts – these cells make dentin, the tough, fibrous core of the tooth.

一些变成成牙本质细胞——这些细胞形成牙本质，即牙齿坚韧的纤核心。