Diagram of landmarks of the teeth. Dental Anatomy and Tooth Morphology
Here is a diagram of the landmarks of the teeth:
| Landmark | Definition |
|---|---|
| Crown | The visible portion of the tooth above the gums |
| Neck | The portion of the tooth that is just below the gum line and connects the crown to the root |
| Root | The portion of the tooth that is embedded in the jawbone and holds the tooth in place |
| Cervix | The rounded portion of the neck just below the crown |
| Enamel | The hard, outer layer of the tooth that covers the crown and protects the tooth from damage |
| Dentin | The layer of tooth material below the enamel that provides support and helps to protect the inner pulp |
| Pulp | The innermost layer of the tooth that contains nerves and blood vessels |
| Incisal Edge | The biting edge of the front teeth |
| Cingulum | The rounded bump on the lingual (tongue) side of the crown near the incisal edge |
| Fossa | A shallow depression on the occlusal (chewing) surface of a molar |
| Tubercle | A small bump on the occlusal surface of a molar |
| Ridge | A raised portion on the occlusal surface of a molar |
| Contact Point | The point at which two teeth touch when the jaw is closed |
| Margin | The edge of a filling or restoration that is closest to the tooth’s pulp |
| Line Angle | The junction between the gingival (gum) margin and the incisal or occlusal edge of a tooth |
| Facial Surface | The front or cheek-facing surface of a tooth |
| Lingual Surface | The tongue-facing surface of a tooth |
| Buccal Surface | The cheek-facing surface of a tooth |
| Apical Foramen | The opening at the end of the root through which nerves and blood vessels enter and exit the pulp |
| Root Canal | The space within the root of a tooth that contains the pulp and root canals |
| Crown Margin | The edge of a dental crown that is closest to the gum tissue |
| Crown-Root Junction | The point at which the crown of the tooth and the root of the tooth meet |
| Implant Fixture | The portion of a dental implant that is surgically placed into the jawbone to support the artificial tooth |
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