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The influence of mandibular skeletal characteristics on inferior alveolar nerve block anesthesia

Title
 The influence of mandibular skeletal characteristics on inferior alveolar nerve block anesthesia 
Authors
 Tae Min You ; Kee-Deog Kim ; Wonse Park ; Eun-Jung Woo ; Jisun Huh 
Issue Date
2015
Journal Title
 Journal of Dental Anesthesia and Pain Medicine 
ISSN
 2383-9309 
Citation
 Journal of Dental Anesthesia and Pain Medicine, Vol.15(3) : 113~119, 2015 
Abstract
Background: The inferior alveolar nerve block (IANB) is the most common anesthetic techniques in dentistry; however, its success rate is low. The purpose of this study was to determine the correlation between IANB failure and mandibular skeletal characteristics Methods: In total, 693 cases of lower third molar extraction (n = 575 patients) were examined in this study. The ratio of the condylar and coronoid distances from the mandibular foramen (condyle-coronoid ratio [CC ratio]) was calculated, and the mandibular skeleton was then classified as normal, retrognathic, or prognathic. The correlation between IANB failure and sex, treatment side, and the CC ratio was assessed. Results: The IANB failure rates for normal, retrognathic, and prognathic mandibles were 7.3%, 14.5%, and 9.5%, respectively, and the failure rate was highest among those with a CC ratio < 0.8 (severe retrognathic mandible). The failure rate was significantly higher in the retrognathic group than in normal group (P = 0.019), and there was no statistically significant difference between the other two groups. Conclusions: IANB failure could be attributable, in part, to the skeletal characteristics of the mandible. In addition, the failure rate was found to be significantly higher in the retrognathic group.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/141754
DOI
10.17245/jdapm.2015.15.3.113
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Advanced General Dentistry
Yonsei Authors
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