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

Authors
 Tae Min You  ;  Kee-Deog Kim  ;  Jisun Huh  ;  Eun-Jung Woo  ;  Wonse Park 
Citation
 Journal of Dental Anesthesia and Pain Medicine, Vol.15(3) : 113-119, 2015 
Journal Title
Journal of Dental Anesthesia and Pain Medicine
ISSN
 2383-9309 
Issue Date
2015
Keywords
Condyle-coronoid ratio ; Inferior alveolar nerve block ; Skeletal characteristics
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.
Files in This Item:
T201504265.pdf Download
DOI
10.17245/jdapm.2015.15.3.113
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 1. Journal Papers
Yonsei Authors
Kim, Kee Deog(김기덕) ORCID logo https://orcid.org/0000-0003-3055-5130
Park, Wonse(박원서) ORCID logo https://orcid.org/0000-0002-2081-1156
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/141754
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