[File:Cross sections of teeth intl.svg|thumb|300px|1. Tooth 2. Enamel 3. Dentin 4. Dental pulp

5. cameral pulp

6. root pulp

7.

8.

9.

10. Sulcus

11.

12. Root

13. Furcation

14. Root apex

15.

16.
17.

18. :

19. free or interdental

20. marginal

21. alveolar

22.

23.

24. Vessels and nerves:

25. dental

26. periodontal

27. alveolar through channel]]