[The observation of the local anaesthesia effect of primacaine in the treatment of pulpitis].

Purpose: To explore the application and the anaesthetic effect of primacaine in anaesthetizing the pulp.

Methods: 162 teeth of pulpitis underwent submucous infiltration anaesthesia via the labial or buccal side (single side anaesthesia). There were 94 teeth of acute pulpitis and 68 teeth of chronic pulpitis among them.