Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: Sep 01, 2015

The Effect of 2 Injection Speeds on Local Anesthetic Discomfort During Inferior Alveolar Nerve Blocks

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,
DDS,
DDS, PhD, and
DDS, PhD
Page Range: 106 – 109
DOI: 10.2344/11-00037.1
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Abstract

This randomized double-blind crossover trial investigated the discomfort associated with 2 injection speeds, low (60 seconds) and slow (100 seconds), during inferior alveolar nerve block by using 1.8 mL of 2% lidocaine with 1 : 100,000 epinephrine. Three phases were considered: (a) mucosa perforation, (b) needle insertion, and (c) solution injection. Thirty-two healthy adult volunteers needing bilateral inferior alveolar nerve blocks at least 1 week apart were enrolled in the present study. The anesthetic procedure discomfort was recorded by volunteers on a 10-cm visual analog scale in each phase for both injection speeds. Comparison between the 2 anesthesia speeds in each phase was performed by paired t test. Results showed no statistically significant difference between injection speeds regarding perforation (P = .1016), needle placement (P = .0584), or speed injection (P = .1806). The discomfort in all phases was considered low. We concluded that the 2 injection speeds tested did not affect the volunteers' pain perception during inferior alveolar nerve blocks.

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Copyright: © American Dental Society of Anesthesiology

Visual analog scale (VAS) mean (±SD) observed during the injection steps for 60- and 100-second speed groups.


Contributor Notes

Address correspondence to Dr Liane Maciel de Almeida Souza, Universidade Federal de Sergipe, Hospital Universitário, Departamento de Odontologia, Rua Cláudio Batista, s/n—Bairro Sanatório, Aracaju, SE, Brasil, CEP 49060-100; odontoliu@gmail.com.
Received: Oct 31, 2011
Accepted: May 06, 2015