yá běn zhì / yòu chēng / xiàng yá zhì / wèi yú / yá yòu zhì / hé / yá gǔ zhì / zhī jiān

牙本质又称象牙质，位于牙釉质和牙骨质之间。

Dentin, also known as 象牙质, lies between tooth enamel and cementum.