The root is the unseen portion that supports and fastens the tooth in the jawbone. The root is attached to the tooth-bearing bone—the alveolar processes—of the jaws by a fibrous ligament called the periodontal ligament or membrane.
It makes up approximately two-thirds of the tooth. It’s made up of several parts: Root canal. The root canal is a passageway that contains pulp. Cementum. Also called cement, this bone-like...