Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. combination inorganic/organic material
7. combination inorganic/organic animal material
8. [bone and bone components materials]
9. bone (material)
10. [bone by form as material]
11. [tooth and tooth components as materials]
12. [tooth components as material]

Narrower term/s

• ivory (material)[+]
  • mammoth ivory
  • walrus ivory
  • whale ivory
  • elephant ivory

Anotations

Scope note:

Material comprising the primary, bone-like structure of a tooth. Dentin is hard calcareous material, with less porosity and less organic matter than bone. It is generally covered with a protective enamel layer. Layers of dentin cover animal teeth (whale, hippopotamus, boar, etc.) and tusks (ivory, elephant, walrus, etc.).