Root canal

Refers to the space within the root of a tooth.

Consists of the pulp chamber within the coronal part of the tooth, the main canal(s), and more intricate branches that may connect the root canals to each other or to the surface of the root.

The center of the tooth houses soft tissues, such as the nerve, blood vessels, and connective tissue.

The center hollow area of the tooth contains a relatively wide space in the coronal portion of the tooth called the pulp chamber.

Canals run through the center of the roots.

The pulp receives nutrition through the blood vessels, and sensory nerves carry signals back to the brain.

A tooth can be relieved from pain if there is irreversible damage to the pulp, via root canal treatment.

The space inside the root canals is filled with vascular, loose connective tissue, the dental pulp.

The dental pulp is the tissue of which the dentin portion of the tooth is composed.

The dental pulp helps complete formation of the secondary teeth one to two years after eruption into the mouth.

The dental pulp nourishes and hydrates the tooth structure, making the tooth more resilient, less brittle and less prone to fracture.

The dental pulp provides a hot and cold sensory function.

Root canal surgery refers to a dental operation, endodontic therapy, wherein the pulp is cleaned out, the space disinfected and then filled.

Root canal anatomy consists of the pulp chamber and root canals, and both contain the dental pulp.

The smaller branches of the root canal are ref2242ed to as accessory canals,.

Accessory canals are most frequently found near the root end, but may be encountered anywhere along the root length.

The total number of root canals per tooth ranges from one to four, five or more in some cases, and sometimes there are more than one root canal per root.

Some teeth may have variations in internal anatomy, with unusual root canal shape, complex branching, existence of horizontal branches, and multiple root canals.

Variations in internal anatomy are the main causes of root canal treatment failures.

The lateral component of the root canal may represent a large volume, impairing the cleaning instrumentation procedure resulting in tissue remnants of the vital or necrotic pulp.

Root canals with an oval cross-section are found in 50%-70% of root canals.

Tear-shaped cross section root canals are common whenever a single root contains two canals.

Atypical aspects of root-canal anatomy are often not seen or recognized in conventional 2D radiographs, but use of cone beam computerized tomography (CBCT) increasingly can recognize these lesions.

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