HISTOLOGY OF ENAMELPresented by: N. Robinson(CRRI)
ENAMELINTRODUCTION Enamel is a higly mineralised structure  covering the anatomic crown of tooth. It is the only tissue ...
Hardness:- hardest structure of the body i.e.5 to 8khn.Permeability:- selectively permeable.Density:- decreases from th...
CHEMICAL PROPERTIESEnamel is composed of organic & inorganic substancesOrganic --------> 4%Inorganic--------> 96%Water    ...
Enamel Rod• Longitudinal section
Wavy course of enamel rod• Enamel rods followsa wavy course thefull thickness ofenamel• A more spiral courseis noted at cu...
• Enamel Rod: Basic   Structural Unit
Cross section of enamel
Microscopic picture of EnamelBrown striae ofRetzius
DEJ, E tufts, E spindles
Enamel lamellae & Cracks
Perikymata (imbrication lines) Are external manifestations       of Retzius striae
Development of Tooth• Tooth and Associated Structures
THANK YOU
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Histology of Enamel
Upcoming SlideShare
Loading in …5
×

Histology of Enamel

35,341 views

Published on

presented by Dr.N.ROBINSON SINGH

Published in: Health & Medicine
2 Comments
82 Likes
Statistics
Notes
No Downloads
Views
Total views
35,341
On SlideShare
0
From Embeds
0
Number of Embeds
22
Actions
Shares
0
Downloads
1,896
Comments
2
Likes
82
Embeds 0
No embeds

No notes for slide

Histology of Enamel

  1. 1. HISTOLOGY OF ENAMELPresented by: N. Robinson(CRRI)
  2. 2. ENAMELINTRODUCTION Enamel is a higly mineralised structure covering the anatomic crown of tooth. It is the only tissue that is totally acellular.PHYSICAL PROPERTIES: Colour:- appears bluish white or greyish at the thick opaque areas & yellow-white at the thin areas reflecting underlying dentin.
  3. 3. Hardness:- hardest structure of the body i.e.5 to 8khn.Permeability:- selectively permeable.Density:- decreases from the surface of enamel to the dentino-enamel junction.Thickness:- thickness over the cusps of the molars where it measures 2.5 mm & incisal edges of incisors where it is 2.0 mm.
  4. 4. CHEMICAL PROPERTIESEnamel is composed of organic & inorganic substancesOrganic --------> 4%Inorganic--------> 96%Water STRUCTURE OF ENAMEL1) Enamel rods(prisms)2) Rod shealths3) Cementing inter-rod substance.
  5. 5. Enamel Rod• Longitudinal section
  6. 6. Wavy course of enamel rod• Enamel rods followsa wavy course thefull thickness ofenamel• A more spiral courseis noted at cusps &incisal areas Gnarled enamel
  7. 7. • Enamel Rod: Basic Structural Unit
  8. 8. Cross section of enamel
  9. 9. Microscopic picture of EnamelBrown striae ofRetzius
  10. 10. DEJ, E tufts, E spindles
  11. 11. Enamel lamellae & Cracks
  12. 12. Perikymata (imbrication lines) Are external manifestations of Retzius striae
  13. 13. Development of Tooth• Tooth and Associated Structures
  14. 14. THANK YOU

×