It is called the cementum and it's the third hardest substance in the human body, after the enamel and the dentin.
The cementum.
cementum
idl
relatively thin
A thin covering on wood is veneer.
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.
the covering of a butterfly is thin tissue skin and color
thin covering
treatment is performed under local anesthesia. A thin sheet of rubber, called a rubber dam, is placed in the mouth to isolate the tooth. The dentist removes any tooth decay and makes an opening through the natural crown of the tooth into the pulp chamber
If you look at a picture of a tooth, you will see the crown of the tooth. That is the top part that is above your gum. The root(s) are the anchors. Some teeth have one root and some have a few. Easy chart I found online: Laterals have one root (these are your front teeth) Canines and most premolars, except for maxillary (upper) first premolars, usually have one root. Maxillary (upper) first premolars and mandibular (lower) molars usually have two roots. Maxillary (upper) molars usually have three roots.
The root-cap performs the basic function of protecting the root tip. The root tip is the apex of the root and is very thin and delicate. It can get injury while going deep in the soil. Here the root cap, as a covering, protects the root tip and helps it to penetrate into the soil layer.
A thin periodontal igament that holds the tooth in place.
A thin skin; a pellicle; a membranous covering, causing opacity; hence, any thin, slight covering., A slender thread, as that of a cobweb., To cover with a thin skin or pellicle.
A thin skin; a pellicle; a membranous covering, causing opacity; hence, any thin, slight covering., A slender thread, as that of a cobweb., To cover with a thin skin or pellicle.
crust