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  • Title: Injection pain of the inferior alveolar nerve block in patients with irreversible pulpitis.
    Author: McCartney M, Reader A, Beck M.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2007 Oct; 104(4):571-5. PubMed ID: 17706440.
    Abstract:
    OBJECTIVE: The purpose of this retrospective analysis was to determine the pain associated with needle insertion, placement, and solution deposition for the conventional inferior alveolar nerve (IAN) block in patients with irreversible pulpitis. STUDY DESIGN: One hundred two emergency patients with irreversible pulpitis received IAN block injections using 2% lidocaine with 1:100,000 epinephrine. The patients recorded pain of the 3 injection stages on a Heft-Parker visual analog scale (VAS). RESULTS: Moderate-to-severe pain may occur 57% to 89% of the time with the IAN block. Needle placement was significantly more painful than needle insertion for men and significantly more painful than either insertion or deposition for women (P < .03). There was no statistical difference between the pain for men or women with respect to needle insertion, placement, or deposition pain (P > .05). Deposition of 0.2 to 0.4 mL anesthetic during placement did not significantly reduce placement pain for either gender (P = .753). CONCLUSION: In conclusion, 57% to 89% of patients presenting with irreversible pulpitis have the potential for moderate to severe pain with the IAN block.
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