Surgical and Radiologic Anatomy

, Volume 26, Issue 6, pp 466–473

The three-dimensional microstructure of the trabecular bone in the mandible

Authors

  • H.-S. Moon
    • Department of Advanced Prosthodontics, Oral Science Research Center, College of DentistryYonsei University
    • Department of Advanced Prosthodontics, School of Dental and Oral SurgeryColumbia University
    • Department of Orthopedic Surgery, College of MedicineAjou University
  • K.-D. Kim
    • Department of Oral and Maxillofacial Radiology, College of DentistryYonsei University
  • A. Ruprecht
    • Department of Oral Pathology, Radiology and Medicine, College of DentistryUniversity of Iowa
    • Department of Radiology, College of MedicineUniversity of Iowa
    • Department of Anatomy and Cell Biology, College of MedicineUniversity of Iowa
  • H.-J. Kim
    • Division of Anatomy, Department of Oral Biology, College of DentistryYonsei University
  • H.-K. Kook
    • Department of Orthopedic Surgery, College of MedicineAjou University
  • M.-K. Chung
    • Department of Advanced Prosthodontics, Oral Science Research Center, College of DentistryYonsei University
Original Article

DOI: 10.1007/s00276-004-0247-x

Cite this article as:
Moon, H., Won, Y., Kim, K. et al. Surg Radiol Anat (2004) 26: 466. doi:10.1007/s00276-004-0247-x

Abstract

This study investigated the three dimensional (3D) trabecular microstructure of the alveolar and basal bone in the mandible using micro-CT and compared the morphometric values of the different sites. Ten specimens were prepared and scanned using a micro-CT system. Both the alveolar and basal trabecular bone of the premolar region in the mandible were measured for the structural analysis. Cross-sectional 1024×1024 pixel images were created. From the two-dimensional (2D) images produced, 3D structural images were reconstructed. After scanning the specimen, the volumes of interest (VOI) of the alveolar and basal bone regions were selected from the 3D reconstruction images, and the structural parameters such as bone volume fraction, bone surface density, trabecular thickness, trabecular separation, trabecular number and structural model index were analyzed. The trabecular structure showed a marked variation within the sites of the specimen, especially in the basal trabecular bone inferior to the mandibular canal. In both the alveolar and basal bone regions, a mixture of both plate-like and rod-like structures was observed. The alveolar region showed a more compact, plate-type trabecular structure than the basal regions. In parametric comparison with the basal bone, the alveolar bone generally had a higher bone volume fraction, bone trabecular thickness and trabecular number, and lower bone surface density, trabecular separation and structural model index. The alveolar bone consisted of a compact bone structure with a large amount of thick plate-type trabecular bone, which was effectively resistant to the masticatory forces. As the measurements were made closer to the basal bone, a loose structure was observed with lower bone volume and fewer, thin, rod-like trabeculae.

Keywords

Trabecular structure Alveolar bone Basal bone Structural parameter Micro-CT

Copyright information

© Springer-Verlag 2004