The influence of mandibular skeletal characteristics on inferior alveolar nerve block anesthesia
유태민, 김기덕, 허지선, 우은정, 박원서,
소속 상세정보
유태민 ( You Tae-Min ) - Dankook University College of Dentistry Department of Advanced General Dentistry
김기덕 ( Kim Kee-Deog ) - Yonsei University College of Dentistry Department of Advanced General Dentistry
허지선 ( Huh Ji-Sun ) - Yonsei University College of Dentistry Department of Advanced General Dentistry
우은정 ( Woo Eun-Jung ) - Yonsei University College of Dentistry Department of Advanced General Dentistry
박원서 ( Park Won-Se ) - Yonsei University College of Dentistry Department of Advanced General Dentistry
KMID : 0980320150150030113
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.
키워드
Condyle-coronoid ratio; Inferior alveolar nerve block; Skeletal characteristics
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