ANATOMY of TEETH 2 1. Anatomy of a tooth. a. Anatomical crown ...

1. ANATOMY of ANATOMY of
TEETH 2TEETH 2

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

Dental Anatomy
Anatomic crownAnatomic crown

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

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

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

6. 3.3.Tissues of the tooth.Tissues of the tooth.
a. Enamela. Enamel
(1) Makes up anatomic crown. (1) Makes up anatomic crown.
(2) Hardest material in the human (2) Hardest material in the human
body. body.
(3) Incapable of remodeling and (3) Incapable of remodeling and
repair. repair.
Dental Anatomy

7. Enamel

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

9. Dentin
Enamel
Dentinal
Tubules

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

11. Dentin
Enamel
Dentinal
Tubules
Cementum
CEJCEJ

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

13. Dentin
Enamel
Dentinal
Tubules
Cementum
Pulp

14. 4. Periodontium4. Periodontium
a. Alveolar process.a. Alveolar process.
(1) Bone extensions of the maxillae (1) Bone extensions of the maxillae
and mandible that supports the and mandible that supports the
teeth teeth..
(2) Cortical plate is the dense outer (2) Cortical plate is the dense outer
layer of bone covering the spongy layer of bone covering the spongy
(cancellous) bone (cancellous) bone
Dental Anatomy

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

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

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