2. TEETH& ESOPHAGUS
Dr IramTassaduq

3. TEETH

4. ANATOMICAL DIVISION
Crown
Root

5. COMPONENTS OF TOOTH
Enamel
Dentin
Cementum
Pulp

7. ENAMEL Acellular mineralized tissue that covers the crown of tooth
Hardest substance in the body
Once formed, can't be replaced
96-98% exist mainly
as hydroxyapatite crystals

8. CEMENTUM Covers the dentin of the root. Pale yellowish
Softer and more permeable
Cementocytes
sharpey’s fibers

9. Enamel is produced from ameloblasts of the enamel organ
Dentin is produced by neural crest derived odontoblasts of the adjacent mesenchyme

10. DENTIN A calcified material that forms most of tooth substance
Hard, yellowish, elastic
Lines surface that is in contact with pulp
Secreted by odontoblast

11. DENTAL PULP & CENTRAL PULP CAVITY (Pulp chamber)
Space occupied by pulp (highly vascular and sensitive loose connective tissue
Apical foramen

12. SUPPORTING TISSUE OF THE TEETH
Alveolar bone proper
Periodontal ligament
Gingiva

13. OVERVIEW OF GIT

14. MUCOSA

15. FUNCTIONS
Protection
Absorption
Secretion

16. SUBMUCOSA

17. MUSCULARIS EXTERNA

18. ADVENTITIA/SEROSA

19. ESOPHAGUS

23. SUBMUCOSA

25. MUSCULARIS EXTERNA

28. THANK YOU