Is a volume of 3.6 mL better than 1.8 mL for inferior alveolar nerve blocks in patients with symptomatic irreversible pulpitis?

Abstract

INTRODUCTION:

The purpose of this retrospective study was to determine the success of the inferior alveolar nerve (IAN) block using either 3.6 mL or 1.8 mL 2% lidocaine with 1:100,000 epinephrine in patients presenting with symptomatic irreversible pulpitis.

METHODS:

As part of 7 previously published studies, 319 emergency patients presenting with symptomatic irreversible pulpitis received either a 1.8-mL volume or 3.6-mL volume of 2% lidocaine with 1:100,000 epinephrine in an IAN block. One hundred ninety patients received a 1.8-mL volume, and 129 received a 3.6-mL volume. Endodontic emergency treatment was completed on each subject. Success was defined as the ability to access and instrument the tooth without pain (visual analog scale score of 0) or mild pain (VAS rating ≤54 mm).

RESULTS:

Success of the 1.8-mL volume was 28%, and for the 3.6-mL volume it was 39%. There was no statistically significant difference between the 2 volumes.

CONCLUSIONS:

In conclusion, for patients presenting with irreversible pulpitis, success was not significantly different between a 3.6-mL volume and a 1.8-mL volume of 2% lidocaine with 1:100,000 epinephrine. The success rates (28%-39%) with either volume were not high enough to ensure complete pulpal anesthesia.

• Authors: Sara Fowler, Al Reader
• Journal: Journal of endodontics (J Endod) Vol. 39 Issue 8 Pg. 970-2 (Aug 2013) ISSN: 1878-3554 [Electronic] United States
• PMID: 23880260 (Publication Type: Journal Article)
• Copyright: Copyright © 2013 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

Chemical References

• Anesthetics, Local
• Vasoconstrictor Agents
• Lidocaine
• Epinephrine

Topics

• Adult
• Anesthesia, Dental (methods)
• Anesthetics, Local (administration & dosage)
• Dental Pulp (drug effects)
• Epinephrine (administration & dosage)
• Female
• Humans
• Lidocaine (administration & dosage)
• Lip (innervation)
• Male
• Mandibular Nerve (drug effects)
• Nerve Block (methods)
• Pain (prevention & control)
• Pain Measurement (methods)
• Pulpitis (therapy)
• Root Canal Therapy (methods)
• Treatment Outcome
• Vasoconstrictor Agents (administration & dosage)