After being exposed, to prevent the dental pulp from necrosis during a cavity preparation, Pulp capping technique is used by the dentists. All or most of the infected and softened enamel and dentin are removed, when dental caries is removed from a tooth. Pulpitis (inflammation) is caused when the pulp of the tooth either being exposed or nearly exposed. To protect a healthy dental pulp and avoid the need for root canal therapy, the Pulp Capping is used.
When a dental restoration gets near the pulp and to prevent the pulp from deteriorating, a small amount of a sedative dressing (calcium hydroxide or MTA) is placed by the dentist. To protect the pulp from noxious agents (heat, cold, bacteria) and stimulate the cell-rich zone of the pulp to lay down a bridge of reparative dentin, Pulp Capping is used.