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ANATOMY of TEETH 2. 1. Anatomy of a tooth. a. Anatomical crown- portion of tooth covered with enamel a. Anatomical crown- portion of tooth covered with.

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Presentation on theme: "ANATOMY of TEETH 2. 1. Anatomy of a tooth. a. Anatomical crown- portion of tooth covered with enamel a. Anatomical crown- portion of tooth covered with."— Presentation transcript:

1 ANATOMY of TEETH 2

2 1. Anatomy of a tooth. a. Anatomical crown- portion of tooth covered with enamel a. Anatomical crown- portion of tooth covered with enamel Dental Anatomy Anatomic crown

3 b.Clinical crown- visible part of tooth above the gum line. b.Clinical crown- visible part of tooth above the gum line. Anatomical crown Clinical crown Dental Anatomy

4 c. Root (1) Part of tooth embedded in the (1) Part of tooth embedded in the alveolar process and covered by alveolar process and covered by cementum. cementum. Dental Anatomy

5 d. Apex- tapered end of root tip. d. Apex- tapered end of root tip. e. Apical foramen- e. Apical foramen- opening at the root tip. the root tip. Dental Anatomy

6 3.Tissues of the tooth. a. Enamel (1) Makes up anatomic crown. (2) Hardest material in the human body. (1) Makes up anatomic crown. (2) Hardest material in the human body. (3) Incapable of remodeling and repair. (3) Incapable of remodeling and repair. Dental Anatomy

7 Enamel

8 b.Dentin (1) Makes up bulk of tooth. (2)Covered by enamel on crown and cementum on the root. (2)Covered by enamel on crown and cementum on the root. (3)Not as hard as enamel. (4) Exposed dentin is often sensitive to cold, hot, air, and touch (via dentinal tubules). Dental Anatomy

9 Dentin Enamel Dentinal Tubules

10 c. Cementum (1) Covers root of tooth. (1) Covers root of tooth. (2) Overlies the dentin and joins the enamel at the cemento-enamel junction (CEJ). (2) Overlies the dentin and joins the enamel at the cemento-enamel junction (CEJ). (3)Primary function is to anchor the tooth to the bony socket with attachment fibers. (3)Primary function is to anchor the tooth to the bony socket with attachment fibers. Dental Anatomy

11 Dentin Enamel Dentinal Tubules Cementum CEJ

12 d. Pulp (1) Made up of blood vessels and nerves entering through the apical foramen. (1) Made up of blood vessels and nerves entering through the apical foramen. (2) Contains connective tissue, which aids interchange between pulp and dentin. (2) Contains connective tissue, which aids interchange between pulp and dentin. Dental Anatomy

13 Dentin Enamel Dentinal Tubules Cementum Pulp

14 4. Periodontium a. Alveolar process. a. Alveolar process. (1) Bone extensions of the maxillae and mandible that supports the teeth. (1) Bone extensions of the maxillae and mandible that supports the teeth. (2) Cortical plate is the dense outer layer of bone covering the spongy (cancellous) bone (2) Cortical plate is the dense outer layer of bone covering the spongy (cancellous) bone Dental Anatomy

15 Dentin Enamel Dentinal Tubules Cementum Pulp Alveolar Process Cortical Plate Spongy Bone

16 b. Periodontal ligaments. (1) Dense connective fibrous tissues that connect teeth to the alveolar bone. (1) Dense connective fibrous tissues that connect teeth to the alveolar bone. (2) One end is embedded in cementum and other end in bone. (2) One end is embedded in cementum and other end in bone. (3) Supports and protects the tooth from normal shock. (3) Supports and protects the tooth from normal shock. Dental Anatomy

17 Dentin Enamel Dentinal Tubules Cementum Pulp Alveolar Process Cortical Plate Spongy Bone Periodontal Ligaments

18 c. Gingiva - surrounds the teeth and covers the alveolar process. Dental Anatomy

19 Dentin Enamel Dentinal Tubules Cementum Pulp Alveolar Process Cortical Plate Spongy Bone Periodontal Ligaments Gingiva


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