Histology of Tooth

Histology

1. HISTOLOGY OF TOOTH V.S.RASHMI PRIYEM ULTRA’S BEST DENTAL SCIENCE COLLEGE, MADURAI

2. THE TOOTH CAN BE DIVIDED INTO : THE CROWN AND THE ROOT

3. MADE UP OF THREE LAYERS NAMELY  ENAMEL ,  DENTINE  AND A  PULP CAVITY .

4. DENTIN MOST OF THE HARD TISSUE IN TEETH IS  DENTIN , A SPECIAL CALCIFIED TISSUE, DERIVED FROM  MESENCHYME .

5. CEMENTUM THE  DENTINE  IN THE  ROOT  IS COVERED BY A LAYER OF CEMENTUM , CALCIFIED TISSUE DERIVED FROM  MESENCHYME .

6. PERIODONTAL LIGAMENT THE TOOTH IS THEN CONNECTED TO BONE BY THE  PERIODONTAL LIGAMENT , WHICH HAS WIDE BUNDLES OF COLLAGEN FIBRES, AND IS EMBEDDED IN BONY RIDGE CALLED  ALVEOLAR RIDGE .

7. ENAMEL THE  CROWN  IS PROTECTED BY LAYER OF  ENAMEL , A VERY HARD, HIGHLY MINERALISED TISSUE, WHICH IS DERIVED FROM  ECTODERM . 

8. CEMENTUM, DENTINE AND ENAMEL DIFFER FROM BONE NOT  VASCULARISED

9. ENAMEL DOES NOT HAVE COLLAGEN AS MAIN CONSITUENT MADE UP OF CRYSTALS OR PRISMS OF CALCIUM PHOSPHATE.

10. CENTRE OF TOOTH IS MADE UP OF A PULP CAVITY  EXTENDS DOWN THROUGH THE ROOTS AS A ROOT CANAL. CONTAINS THE NERVE AND BLOOD SUPPLY TO THE TOOTH.

11. GUMS OR GINGIVA  THE ORAL MUCOSA THAT COVERS THE TOOTH.