Which of the following is not a feature of enamel:
Properties of enamel:
|Properties||Properties of enamel|
|Modulus of Hardness (MOH)||MOH of enamel is 5-8|
|Knoop hardness Number (KHN)||200 - 500 KHN|
2.8 to 3 gms/dl.
The density of enamel is maximum on the surface.
The density of enamel is less in primary teeth as compared to secondary teeth.
Incisal edges - 2 mm
Premolars - 2.3 mm
Molars - 2.6 mm
|Modulus of Elasticity (MOE)||
MOE is high which makes the enamel rigid substance.
Enamel is translucent, but it takes the color of the underlying dentin.
Enamel is semi-permeable tissue. However permeability of enamel decrease with an increase in age.
If the fluoride is deposited in the hydroxyapatite crystals then it leads to the formation of fluorapatite which decreases the permeability of enamel resulting in its anti-cariogenic potential.
Enamel is a plastic dental tissue.
Whereas dentin is elastic tissue.