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이열 하악관(Bifid Mandibular Canal): 방사선적 소견과 임상적 의의 -증례보고-
Bifid Mandibular Canal: Radiographic Observation and Clinical Relevance -A Case Report-

대한치과마취과학회지 2009년 9권 1호 p.24 ~ 29

이현우, 김여갑, 이백수, 권용대, 최병준, 김영란,

소속 상세정보

이현우 ( Lee Hyun-Woo ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
김여갑 ( Kim Yeo-Gap ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
이백수 ( Lee Baek-Soo ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
권용대 ( Kwon Yong-Dae ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
최병준 ( Choi Byung-Jun ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
김영란 ( Kim Young-Ran ) - 경희대학교 치의학전문대학원 구강악안면외과학교실

KMID : 0980220090090010024

Abstract

When performing the inferior alveolar nerve block anesthesia, surgeon often faced a difficulty of the surgical operation due to the incomplete anesthesia. One of the reason is the variety of mandibular canal anatomy. Up to now, there are some reports of index cases about bifid mandibular canal among mandibular canal anatomic variation, and some classification is applied according to anatomical location and configuration. When surgical operation is performed involving mandible such as dantal implant treatment, extraction of an impacted third molar, sagittal split ramus osteotomy, etc, the position of mandibular canal should be considered. Bifid mandibular canal clinically causes troublesome cases of anesthesia when inferior alvelor nerve block, especially is performed extraction of an impacted third molar. Therefore, It is important for clinicians to recognize the presence of bifid canals on radiographys. Nowadays, the position of mandibular canal can be measured precisely by using Dental CT. It is not found by panorama image but is found by Dental CT sometimes. Among the patients, which take panorama and Dental CT simultaneously, for tooth extraction of lower impacted third molar in our department, we report the case that did not identifying in panorama but identifying it in Dental CT.