Whats the clinical crown

The visible portion if the enamel above the gum thats you can see with your bare eye, not including the deeper enamel, dentin or pulp

Why can't the enamel regenerate after eruption

Because the Ameloblasts are lost/ died as the tooth erupts

How thick is the enamel generally in incisors

In the incisal edge is 2mm thick

How thick is the enamel generally in premolars

In the cusps is 2.3-2.5mm thick

How thick is the enamel generally in molars

In the cusps is 2.5-3mm thick

In which part of the mandibular molars is the enamle the thickest

In the buccal cusps

In which part of the maxillary molars is the enamle the thickest

In the palatal cusps

Whats the organic matrix of enamel made of?

4-12% of water, 1-2% protein

Whats the inorganic part of the enamel made of

By volume 90-92% Symmetrically repeating Hydroxyapatite(calcium phosphate) crystals

How many rods are there in mandibular incisors

5 million

How many prisms are there in molars

12 million

How big is the diameter of enamel rods near the DEJ

4 microns

How big is the diameter of enamel rods on the surface of enamel

8 microns

What affects the color of the tooth

• Color of the dentin
• thickness of the enamel
• if there are stains in the animal(while developments substances like tetracycline can cause teeth to have a brown band around them bc the Ca binds to the enamel or excess of fluoride can cause Fluorosis) they change how the enamel reflects light

what affects enamel translucency

mineralization and homogeneity of enamel

What enamel structural features act as pain receptors in the enamel

Enamel Spindles

Where do enamel tufts get their names from

from grass tuft

How high can Enamel Tuft get

they can reach as high as the one third(1/3)-half(1/2) the enamel thickness

Why are Enamel Tuft considered weak spots

they're made mostly of proteins and not so much inorganic compounds(hydroxyapetite crystals) which make them easier to break

What role do Enamel Tuft considered play in the enamel

they distribute stress throughout the enamel

What are Enamel lamella

hypominarlized parts of the enamel that contain mostly water and proteins that didn't turn to crystals, they extend throughout the enamel till they reach DEJ, sometimes they even penetrate it

What is Gnarled enamel

they are the twisting of enamel rods around each other to strengthen the enamel especially when they reach the cusps or incisal ridge

What is Hunter-Shreger bands

they are light and dark bands that appear when reflected light hits the enamel, the light bands are bands aligned in one direction while the darker bands are aligned in different directions

What is the Salivary pellicle made from

mucoproteins(proteins that help to make mucus) and sialoproteins (proteins that help to make saliva)

What are Dental plaques made from

Microorganisms that mix with Salivary Plaques

What happens if you don't remove Dental Plaques

after eating the bacteria in the dental plaques metabolize the sugar stuck on the surface of the plaques which results in making acids, that acid with the dental plaques will turn into dental carries and periodontal diseases and the picture(dental calculus(tartar))

What causes mineralization of Enamel

intentional or pathogens

Which part of the enamel is more soluble

the deeper you go the weaker the enamel gets because of less density

How to make the teeth less sensitive to acid attacks

by taking fluoride(F^-) whether topically(toothpastes that contain fluoride) or systematically(medications)