The 14th Triennial Dental Congress on Anesthesia, Sedation, and Pain Control sponsored by the International Federation of Dental Anesthesia Societies (IFDAS) takes place this year on October 8–10 in Berlin, Germany. For those of you who have never been to an IFDAS meeting, you really should consider attending. Dentists from all over the world—frequently including such places as Australia, Canada, Cambodia, England, France, Germany, Israel, Italy, Japan, Kuwait, New Zealand, Russia, Scotland, South Korea, and the United States—attend and present presentations on developments in sedation, local anesthesia, management of the medically compromised patient, and emergency medicine. Most interestingly, all of

Abstract

The aim of the present study was to compare the effects of a topical anesthetic to a placebo on pain perception during administration of local anesthesia in 2 regions of the oral cavity. A split-mouth, double-blind, randomized clinical trial design was used. Thirty-eight subjects, ages 18–50 years, American Society of Anesthesiologists I and II, received 4 anesthetic injections each in regions corresponding to the posterior superior alveolar nerve (PSA) and greater palatine nerve (GPN), totaling 152 sites analyzed. The side of the mouth where the topical anesthetic (benzocaine 20%) or the placebo was to be applied was chosen by a flip of a coin. The needle used was 27G, and the anesthetic used for administration of local anesthesia was 2% lidocaine with 1:100,000 epinephrine. After receiving the administration of local anesthesia, each patient reported pain perception on a visual analog scale (VAS) of 100-mm length. The results showed that the topical anesthetic and the placebo had similar effects: there was no statistically significant VAS difference between the PSA and the GPN pain ratings. A higher value on the VAS for the anesthesia of the GPN, relative to the PSA, was observed for both groups. Regarding gender, male patients had higher values on the VAS compared with female patients, but these differences were not meaningful. The topical anesthetic and the placebo had similar effects on pain perception for injection of local anesthesia for the PSA and GPN.

Abstract

The aim of this study was to investigate the effect of changes in end-tidal carbon dioxide tension (ETCO₂) during remifentanil (Remi) infusion on oral tissue blood flow in rabbits. Eight male tracheotomized Japan White rabbits were anesthetized with sevoflurane under mechanical ventilation. The infusion rate of Remi was 0.4 μg/kg/min. Carbon dioxide was added to the inspired gas to change the inspired CO₂ tension to prevent changes in the ventilating condition. Observed variables were systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), common carotid artery blood flow (CCBF), tongue mucosal blood flow (TBF), mandibular bone marrow tissue blood flow (BBF), masseter muscle tissue blood flow (MBF), upper alveolar tissue blood flow (UBF), and lower alveolar tissue blood flow (LBF). The CCBF, TBF, BBF, UBF, and LBF values were increased, while MBF was decreased, under hypercapnia, and vice versa. The BBF, UBF, and LBF values were increased, while the MBF value was decreased, under hypercapnia during Remi infusion, and vice versa. The BBF, MBF, UBF, and LBF values, but not the CCBF and TBF values, changed along with ETCO₂ changes during Remi infusion.

Abstract

The purpose of this study was to investigate the effectiveness of preemptive analgesia with nonsteroidal anti-inflammatory drugs (NSAIDs) in third-molar surgery. A PubMed literature search was conducted for articles restricted to the English language using the following terms (DeCS/MeSH) or combinations: analgesia, third molar, and preemptive. From a total of 704 articles, 6 (n = 420 subjects) were selected. All studies presented a low risk of bias (Cochrane criteria) but exhibited high heterogeneity of methods. Two studies were excluded from the meta-analysis because they did not have adequate numeric values (dichotomous data) for the calculations. Preemptive analgesia showed no significant benefit (n = 298, P = .2227, odds ratio: 2.30, 0.60–8.73) in reducing postoperative pain after removal of lower impacted third molars. However, there was a probable direct relationship between the effectiveness of NSAIDs in preemptive analgesia for removal of third molars and its selectivity for the cyclooxygenase-2 (COX-2). Preemptive analgesia did not have a significant effect in reducing postoperative pain after removal of lower impacted third molars. More homogeneous and well-delineated clinical studies are necessary to determine a possible association between NSAIDs' selectivity for COX-2 and treatment effectiveness.

Ifdas Meeting is Coming Up

Efficacy of Benzocaine 20% Topical Anesthetic Compared to Placebo Prior to Administration of Local Anesthesia in the Oral Cavity: A Randomized Controlled Trial

Abstract

Tissue Blood Flow During Remifentanil Infusion With Carbon Dioxide Loading

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Does the Preemptive Use of Oral Nonsteroidal Anti-inflammatory Drugs Reduce Postoperative Pain in Surgical Removal of Third Molars? A Meta-analysis of Randomized Clinical Trials

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Anaphylactoid-like Reaction to Midazolam During Oral and Maxillofacial Surgery

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Inadvertent Endobronchial Intubation in a Patient With a Short Neck Length

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Repeated General Anesthesia in a Patient With Noonan Syndrome

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Airway Assessment for Office Sedation/Anesthesia

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Continuing Education Program

Book Review

Letter to the Editor

Should Anesthesiologists be Concerned With Acute Angle Closure Glaucoma?

Reply

Reply From Editor:

Announcements

14TH INTERNATIONAL DENTAL CONGRESS ON ANESTHESIA, SEDATION AND PAIN CONTROL
of the International Federation of Dental Anesthesia Societies
will be held in
BERLIN, GERMANY OCTOBER 8–10, 2015
For more information, see www.ifdas.org

Call for Proposals to Amend the IFDAS Constitution

Continuing Education Program

Announcements

Ifdas Meeting is Coming Up

Efficacy of Benzocaine 20% Topical Anesthetic Compared to Placebo Prior to Administration of Local Anesthesia in the Oral Cavity: A Randomized Controlled Trial

Tissue Blood Flow During Remifentanil Infusion With Carbon Dioxide Loading