ROOT

Root is the portion of the tooth that is anchored in the jaw. It is generally hidden from view and extends below the gum line. The root provides support and stability to the tooth.

Dental roots are classified according to their shape. The most common type of root is the single rooted tooth, which has one main root with a few smaller branches. Multi-rooted teeth, such as molars, have multiple roots.

The root of a tooth is covered by a tough, protective layer of tissue called the root sheath. The root sheath is made up of two layers: the outer layer is called the epithelial root sheath (ERS), and the inner layer is called the connective tissue root sheath (CTRS).

The ERS is made up of epithelial cells, which are tightly packed together and form a barrier that protects the tooth from bacteria and other harmful substances. The CTRS is made up of connective tissue, which provides support and nutrients to the tooth.

The root sheath is attached to the tooth by a network of fibers called the periodontal ligament (PDL). The PDL helps to hold the tooth in place and allows for movement of the tooth during chewing.

The root of a tooth is surrounded by bone. The space between the bone and the root is called the root canal. The root canal is filled with pulp, which is made up of blood vessels, nerves, and connective tissue.

The pulp provides nutrients to the tooth and helps to keep it healthy. The root canal is sealed off from the rest of the tooth by the root canal wall.

The root canal wall is made up of two layers: the inner layer is called the dentin, and the outer layer is called the enamel. The dentin is a hard, porous material that makes up the majority of the root canal wall.

The enamel is a thin, hard layer that covers the dentin. The enamel helps to protect the root canal from bacteria and other harmful substances.

The root of a tooth is surrounded by bone. The space between the bone and the root is called the periodontal ligament (PDL). The PDL helps to hold the tooth in place and allows for movement of the tooth during chewing.

The root canal is sealed off from the rest of the tooth by the root canal wall. The root canal wall is made up of two layers: the inner layer is called the dentin, and the outer layer is called the enamel.

The root canal is filled with pulp, which is made up of blood vessels, nerves, and connective tissue. The pulp provides nutrients to the tooth and helps to keep it healthy.