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The crown has dentin covered by enamel, each root has dentin covered by cementum. The inner portion of the dentin of both the crown and the root also covers the pulp cavity of the tooth close to the CEJ.
Dental enamel
dentin
The part of the tooth that is covered with enamel is the crown.
The part of a tooth that is exposed and above the gum is called "crown", not to confuse with a crown that is prothesis to restore a heavily damaged tooth. The part of a tooth that is hidden inside the bone is called "root".
enamel found only in the crown of the tooth ( the exposed part of the tooth ), dentin found in both the crown and the root of the tooth ( root : the embedded part of the tooth ) and cement which hold the tooth in it's place
Dentin is the substance making up the main part of a tooth, while the enamel is the substance covering the the visible part of an anatomical crown in a thin layer. Inside the tooth, well protected by the dentin, is the pulp chamber and the root canals - the nerve of the tooth.
answer is A. cervix
I'm not a dentist, but I would say enamel
dentin is less minerelised than enamel thus it is soft
The crown is made up of enamel which is the hardest tissue in the body. Under the layer of enamel is dentin which gives enamel its color. Dentin is softer than enamel. Underneath the dentin layer are pulp horns and pulp chambers.
Teeth are mostly made of enamel, which is a type of bone that is harder, with a more dense extracellular matrix, than regular bone. The other important factor is that bone is alive, yet enamel is not because it does not have access to blood like bone does.