Anatomy of Teeth

Introduction

• Teeth are not considered bones despite appearances.
• Anatomists distinguish teeth from bones due to key differences.

Main Parts of a Tooth

1. Crown

   • Visible portion above the gums.
   • Covered by enamel.
   • Enamel protects dentin and pulp chamber.

2. Neck

   • Also known as the cemento-enamel junction or cervical line.
   • Attachment area for gums.
   • Transition point from enamel to cementum.

3. Root

   • Extends from neck to root's apex.
   • Secured to alveolar bone socket.
   • Covered by cementum.

Tooth Tissue Types

1. Enamel

   • Hard outer layer of the crown.
   • Composed mostly of minerals (e.g., hydroxyapatite).
   • Susceptible to acid damage (from plaque or acidic foods).

2. Cementum

   • Covers the root.
   • Formed by cementoblasts.
   • Lower mineral content than enamel and dentin.
   • Part of the periodontium.

3. Dentin

   • Found beneath enamel and cementum.
   • Composed of 70% mineral content.
   • Contains dentinal tubules that supply nutrients.
   • Sensitive to damage.

4. Pulp

   • Located within the pulp cavity.
   • Contains odontoblasts, vessels, and nerves.
   • Provides nutrition, sensation, and immune defense.

Types of Teeth

• Incisors
• Canines (Cuspids)
• Premolars (Bicuspids)
• Molars

Additional Resources

• Free quiz available on website.
• More anatomy videos in playlist.

Conclusion

• Video covers the anatomy of teeth.
• Stay tuned for more detailed videos on types of teeth.
• For further learning, subscribe and check more resources on the website.