Abstract

The aim of this study was to compare the effectiveness of 2 different volumes of anesthetic solution for a premolar-molar extraction, and to determine the onset of complete mandibular conduction anesthesia via a Gow-Gates mandibular block. One operator performed 32 blocks with a 27-gauge needle on patients who required a dental extraction: 16 blocks using 1.8 mL of anesthetic solution, and 16 blocks using 3.6 mL of anesthetic solution. The parameters evaluated were frequency of successful anesthesia and onset of complete anesthesia. Significant differences (P < .005) were observed in the evaluation of volume: the 3.6 mL group yielded a higher success rate (82.5%) than the 1.8 mL group (17.5%). The onset of complete conduction anesthesia was achieved in 8 minutes by 56% of the subjects (9 of 16) with 3.6 mL and only one subject in 16 (6%) with 1.8 mL. A larger volume of anesthetic solution (3.6 mL) is required to achieve a higher success rate and a faster onset of action for a dental extraction without the use of reinforcement anesthesia. The volume of anesthetic solution is indirectly proportional to the onset of complete anesthesia. A premolar-molar extraction can be done, with 3.6 mL of anesthetic solution, in more than 50% of the patients 8 minutes after injection.

Abstract

The authors, using a crossover design, randomly administered, in a single-blind manner, 3 primary intraosseous injections to 61 subjects using: the Wand local anesthetic system at a deposition rate of 45 seconds (fast injection); the Wand local anesthetic system at a deposition rate of 4 minutes and 45 seconds (slow injection); a conventional syringe injection at a deposition rate of 4 minutes and 45 seconds (slow injection), in 3 separate appointments spaced at least 3 weeks apart. A pulse oximeter measured heart rate (pulse). The results demonstrated the mean maximum heart rate was statistically higher with the fast intraosseous injection (average 21 to 28 beats/min increase) than either of the 2 slow intraosseous injections (average 10 to 12 beats/min increase). There was no statistically significant difference between the 2 slow injections. We concluded that an intraosseous injection of 1.4 mL of 2% lidocaine with 1 : 100,000 epinephrine with the Wand at a 45-second rate of anesthetic deposition resulted in a significantly higher heart rate when compared with a 4-minute and 45-second anesthetic solution deposition using either the Wand or traditional syringe.

Gum Chewing May Attenuate Salivary Alpha-amylase Of Psychological Stress Responses

Nobuyoshi Nakajo, Shigemasa Tomioka, Satoru Eguchi, Kazumi Takaishi, Gota Cho, and Kenji Sato^*, Department of Dental Anesthesiology, Graduate School of Dentistry, The University of Tokushima (Chief: Prof. Nobuyoshi Nakajo) and ^*Clinical Psychology Studies, Graduate School of Human and Natural Environment Sciences, The University of Tokushima (Chief: Prof. Yoko Mori)

The aim of this study was to examine whether gum chewing could reduce stress responses. The salivary biomarkers associated with psychological pressure were examined during clinical training of local anesthesia in 50 dental undergraduate students. This study

ADA's Sedation and Anesthesia Guidelines Pass: Will They Be Universally Accepted?

Gow-Gates Technique: A Pilot Study for Extraction Procedures With Clinical Evaluation and Review

Abstract

Heart Rate Effects of Intraosseous Injections Using Slow and Fast Rates of Anesthetic Solution Deposition

Abstract

JDSA Abstracts

Gum Chewing May Attenuate Salivary Alpha-amylase Of Psychological Stress Responses

ADA's Sedation and Anesthesia Guidelines Pass: Will They Be Universally Accepted?

JDSA Abstracts

Gow-Gates Technique: A Pilot Study for Extraction Procedures With Clinical Evaluation and Review

Heart Rate Effects of Intraosseous Injections Using Slow and Fast Rates of Anesthetic Solution Deposition