Pulp stones

Pulp stones are calcified structures that may form within vital pulpal tissue They are often oval or round, but they may also have an irregular shape. Sometimes pulp stone(s) may diffusely fill a major part of the pulpal chamber.

Size and morphological features have been used for classification of intrapulpal calcifications, but classifications have little significance in endodontics.

Previously, pulp stones were thought to be a sign of pulpal pathosis, but evidence for this is lacking. Nowadays pulp stones are not regarded as an indication for endodontic therapy.

If endodontic treatment is, however, started for other reasons, pulp stones may complicate gaining access to the root canals or obtaining correct working length. Use of ultrasound often helps to remove pulp stones during root canal preparation.