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Tooth Terms

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1. What are the 3 divisions of the tooth: Crown, cervix, root.
2. Crown: part of tooth normally seen in mouth & covered with enamel.
3. Anatomical crown:  part of tooth composed of dentin covered by enamel.
4. Clinical crown: Part of tooth exposed to the oral cavity can be seen, not covered with gingiva. Goes by gingival margin, which can change.
5. Cervix (CEJ) (neck): where crown meets the root. Cementum usually overlaps the enamel.
6. Root: covered in cementum, located in bone, not normally visible.
7. The function of the root is: to support & stabilize tooth & provides means for nourishment.
8. Anatomical root: root covered by cementum.
9. Clinical root: part of root that is visible, not covered in gingiva.
10.  Apical: toward the root.
11. Alveolar Mucosa: Darker pink, Apical to mucogingival junction. More delicate than attached gingiva & more displaceable.
12. Marginal Gingiva: gingiva at margin of the tooth. Border at tooth.
13. Gingival Line: where gingiva meets the tooth. Soft tissue surrounding tooth.
14. Interdental papilla: gingival tissue that is between teeth in Interdental space.
15. Embrasures: open space between proximal surfaces of 2 adjacent teeth in same arch.
16. Contact area: the region of mesial distal surfaces of tooth, which touches adjacent tooth in same arch.
17. Interproximal space: triangle space between 2 adjacent teeth cervical to their contact, Close to the CEJ.
18. Alveolar Process: bone that surrounds & supports tooth. Covered by mucous membrane.
19. Alveolar Bone: Thin compact bone that forms the wall f the tooth socket or aveolous.
20.  The following are crown surface forms, describe them:

·        Triangular: anterior teeth from a proximal view.

·        Trapezoidal: All teeth in arch can be classified as this from facial & lingual surfaces. Also maxillary posterior teeth from their proximal view. This helps form the contact point.

·        Rhomboidal: The mandibular posterior from a proximal view.

21. Growth centers of the tooth where the main divisions come from: lobes
22. Tooth bud: develops into lobes. These develop into cusp of the teeth.
23.  Anterior incisors develop from 4 lobes.
24. Canines develop from 4 lobes: which ones specifically: Mamelons: 3 labial lobes, & cingulum: 1 lingual lobe.
25. Premolars have 1 lingual lobe and 3 buccal lobes, what is the exception: mandibular 2^nd premolar sometimes has 5 lobes.
26. 1^st molar develops from 5 lobes.
27. 2^nd & 3^rd molars develop from 4 lobes.

Disclaimer: These notes were copied and pasted from files sent to me by Andrea.  They have not been reviewed for errors. You are responsible for checking out the information to verify the accuracy. This site, Amy Nieves and Andrea are not responsible for typographical errors.