Relationship between trabecular strength and three-dimensional architecture in the pig mandible using microcomputed tomography.
- Author:
Kyung Hoe HUH
1
;
Moo Soon PARK
;
Won Jin YI
;
Min Suk HEO
;
Sam Sun LEE
;
Soon Chul CHOI
Author Information
1. Department of Oral and Maxillofacial Radiology, Dental Research Institute, and BK21, College of Dentistry, Seoul National University. raychoi@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Architecture;
Compressive Strength;
Mandible;
Tomography Scanners, X-Ray Computed
- MeSH:
Anisotropy;
Compressive Strength;
Elastic Modulus;
Humans;
Linear Models;
Male;
Mandible*;
Swine;
Tomography Scanners, X-Ray Computed;
X-Ray Microtomography*
- From:Korean Journal of Oral and Maxillofacial Radiology
2005;35(3):167-173
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To investigate the relationship between three-dimensional (3D) bone imaging parameters and trabecular strength in the mandible. MATERIALS AND METHODS: Bone specimens were obtained from the mandibles of five male pigs weighing around 110 kg each. Of those, 43 samples were selected for 3D analysis and measured by micro-computed tomography. The five morphometric parameters were trabecular thickness (Tb.Th), bone specific surface (BS/BV), percent bone volume (BV/TV), structure model index (SMI) and degree of anisotropy (DA). Through destructive mechanical testing, strength parameters were obtained. RESULTS: BV/TV, SMI, BS/BV, and Tb.Th showed significant correlations with strength parameters. DA did not show any correlation with the other parameters. In multiple linear regression analysis, BV/TV alone explained 43% of the variance in Young's modulus. By stepwise inclusion of SMI, the variance in the Young's modulus was better explained up to 52%. CONCLUSIONS: Predicting trabecular strength in the mandible through architectural analysis would be possible. Further study is needed to establish the tendency and variety of trabecular architecture and strength according to the locations within the mandible.