intrapulpal injection
A last-resort anesthetic technique in which local anesthetic is deposited directly into the pulp chamber or root canal when other methods have failed to provide adequate anesthesia.
Full Definition
Intrapulpal injection is reserved for cases of profound anesthesia failure, most commonly in symptomatic irreversible pulpitis. The needle is inserted directly into the exposed pulp tissue, and anesthetic is expressed under back-pressure, causing brief but intense pain followed by immediate pulpal numbness. Because the technique is inherently uncomfortable, patient communication and consent documentation are particularly important. Editors reviewing endodontic case reports should recognise this term as distinct from both intraosseous and PDL injections in mechanism and clinical indication. The technique produces analgesia of very short duration, sufficient only for the immediate endodontic procedure.
Usage
Usage note: Always specify the distinction from intraosseous and PDL injections when editing clinical technique descriptions; conflating these terms is a common editorial error.
In Context
- "Following the failure of two inferior alveolar nerve blocks, an intrapulpal injection was documented as a final supplemental measure before pulpectomy." — Endodontic case report
- "The review article cautioned that intrapulpal injection should never be described as a primary anesthetic technique in editorial contexts." — Dental anesthesiology review article