[衛(wèi)生法規(guī)]牙齒發(fā)育過程中所形成的牙本質是

原題:
[衛(wèi)生法規(guī)]牙齒發(fā)育過程中所形成的牙本質是

---

牙齒發(fā)育過程中所形成的牙本質是
答案：
C