What causes a cavity in the tooth that frequently bleeds?

A cavity in the tooth accompanied by frequent bleeding is typically caused by dental caries or periodontitis. A specific type of polyp—known as a pulp polyp—may develop when caries progresses deeply into the tooth, reaching the floor of the pulp chamber; this condition requires professional diagnosis by a dentist. Gingival polyps can be surgically removed, followed by routine restoration of the carious lesion. In contrast, pulp polyps necessitate root canal treatment for complete removal.