- An enamel rod is the basic unit of tooth enamel.
- Measuring 4 μm wide to 8 μm high,
- An enamel rod is a tightly packed, highly organized mass of hydroxyapatite crystals
- It provides rigidity to the rods and strengthens the enamel.
- Enamel rods normally have a clear crystalline structure
- Light can pass through rods
- Many rods have a fish scale appearance
- Shape: Hexagonal
- Pattern: Keyhole or paddle-shaped prism pattern
Number:
- 5 million= mandibular lower incisor to
- 12 million= maxillary first molar
The direction of rods:
- Rods are rarely straight, they follow a wavy course from dentin to the enamel surface
- Generally, they are oriented at the right angles to Dentin surface
- Horizontal direction in the cervical and central part of the Crown
- Oblique to vertical direction in the incisal regions
Striations:
- Rods are built up of segments separated by Dark Line in a rhythmic manner
- Visible by the action of mild acids
- Striations are uniform of 4 centimetre
- Written by Anisha Valli
No comments:
Post a Comment
This is express yourself space. Where you type create something beautiful! <3
Wondering what do I write? Well...
Tell us something you know better. You are a brilliant mind. Yes, you are! ^__^
Ask about something you don't understand @_@?
Compliment... Say something nice! =D
Be a good critic and correct us if something went wrong :|
Go ahead. Comment all you like here! (:
PS: We have moderated comments to reduce spam. ALL comments that are not spam will be published on the website.