하악소주골 미세구조의 3차원적 분석
The three dimensional analysis of microstructure of Mandibular trabecular bone
문홍석, 원예연, 김기덕, 이석원, 백명현, 국희균, 정문규,
소속 상세정보
문홍석 ( Moon Hong-Seok ) - 연세대학교 치과대학 보철학교실
원예연 ( Won Ye-Yeon ) - 아주대학교 의과대학 정형외과학교실
김기덕 ( Kim Kee-Deog ) - 연세대학교 치과대학 구강악안면방사선학교실
이석원 ( Lee Suk-Won ) - 연세대학교 치과대학 보철학교실
백명현 ( Baek Myong-Hyun ) - 아주대학교 의과대학 정형외과학교실
국희균 ( Kook H.-K. ) - 아주대학교 의과대학 정형외과학교실
정문규 ( Chung Moon-Kyu ) - 연세대학교 치과대학 보철학교실
KMID : 0602720030070020012
Abstract
Aim: This study has used Micro-Computerized Tomograph(micro-CT) to compare morphology of alveolar and basal bone of specific measuring sites of premolar regions of mandible
Materials and Methods: Three specimens were prepared and Micro-CT was taken. The structural analysis of the trabecular bone of alveolar and basal bone between the first and second premolar were carried out. The cross sectional image was consisted of 1024×1024 pixels and the size of each pixel was 21.3×21.3μm2. The cross-section scanning distance was also 21.3μm2. The three dimensional image was constructed with two dimensional images. After scanning the specimen, the volume of interest(VOL) was established and two and three dimensional structures were measured.
From these image layers Tb Th(trabecular thickness), Tb. SP(trabecular separation), Tb. N(trabecular number), BS/BV(bone surface density), BV/TV(bone volume fraction), SMI(structural model index) were analyzed.
Result: The trabecular bone structure of specimens varied greatly depend on the sites and especially more so at the basal trabecular bone, inferior to the inferior dental nerve. Both alveolar and basal bone, a mixture of plate and rod-like structures were observed. On average alveolar bone had higher measurement of Th.T, Tb.N, Bs/Tv, but lower Tb.Sp value than basal bone.
Conclusion: Alveolar bone is consisted of condensed large quantity of trabecular bone and this structural property allows effectively resist occlusal load. However, nearer to the basal bone, the has lower bone density and reduced trabecular bone.
키워드
원문 및 링크아웃 정보
등재저널 정보