조직형태학적 분석을 통한 아래이틀신경 내 턱끝가지의 형태학적 배열
Morphological arrangement of mental branch in inferior alveolar nerve using histomorphometric analysis
이철권, 이명화, 모신엽, 이동설, 유선경, 조광희, 김흥중,
소속 상세정보
이철권 ( Lee Chul-Kwon ) - 조선대학교 치의학전문대학원 구강해부학교실
이명화 ( Lee Myoung-Hwa ) - 조선대학교 치의학전문대학원 구강해부학교실
모신엽 ( Mo Shin-Yeob ) - 조선대학교 치의학전문대학원 구강생물학연구소
이동설 ( Lee Dong-Seol ) - 조선대학교 치의학전문대학원 구강생물학연구소
유선경 ( Yu Sun-Kyoung ) - 조선대학교 치의학전문대학원 구강해부학교실
조광희 ( Cho Kwang-Hee ) - 조선대학교 치의학전문대학원 구강생물학연구소
김흥중 ( Kim Heung-Joong ) - 조선대학교 치의학전문대학원 구강해부학교실
KMID : 0353320130370020120
Abstract
Purpose: The inferior alveolar nerve (IAN) is vulnerable to injury from implant placement and surgical procedures in the mandibular region. The purpose of this study was to measure and assess the relative areas, bundle numbers, and locations of the mental branch (MB) and dental branch (DB) within IAN.
Materials and Methods: Twenty dentulous hemimandibles were examined (eight males and two females, mean age: 58.2 years). Hemimandibles were decalcified for 10 days, after which the specimens were embedded in paraffin and cut at a thickness of 8 μm. The sections were then stained with hematoxylin & eosin and then observed by light microscopy. The areas, bundle numbers, and locations of the MB and DB were measured using image analysis software applied to histological photographs.
Results: The MB showed a tendency to maintain its area, whereas the area of the DB, which gave off branches to each tooth traveling within the mandibular canal, decreased toward the anterior tooth. The MB usually comprised four nerve bundles, each wrapped in the perineurium. Based on the location of the MB, the DB was located superobuccally in the molar region and traveled superolingually in the premolar region.
Conclusion: These results show that the IAN consists of two major nerve bundles in which the MB and DB are separately enveloped in the perineurium, and the area of the MB is larger in comparison with that of the DB. Therefore, more careful surgical procedures in the mandibular region are needed to avoid nerve injury.
키워드
Dental branch; Inferior alveolar nerve; Mental branch
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