Micromechanics/structure relationships in the XXXX mandible.

@entity1 @entity4625 @entity174 @entity2270 @entity79 @entity2720 @entity1348
OBJECTIVES: A clear understanding of the relationship between the micromechanical properties and orientation of the osteons within the mandible is important to understand mandibular function, @entity174 repair, treatment of temporo-mandibular @entity2720 , the materials and organization of dental implants. The objective of this research was to obtain the micromechanical properties of @entity1 mandibular cortical bone as a function of orientation from @entity1348 to @entity1348 . METHODS: A mandible obtained from a deceased 66 year-old female free of @entity79 was used. The mandible was embedded in @entity4625 . The micromechanical properties analysis was obtained using the UH3 scanning acoustic microscope (SAM; Olympus Co., Tokyo, Japan). The coordinates system is defined such that the inferior border of mandibular is positioned on the x-y plane. x is along the anterior-posterior direction, y is in the horizontal direction and z is in superior-inferior direction. RESULTS: The osteonal orientations were almost parallel to the x @entity2270 and eventually branched into two directions towards the coronoid process and condylar head. The SAM revealed that almost the whole area of the mandible body was found to be transversely isotropic in the plane perpendicular to the x @entity2270 . In the parallel and oblique directions, all data were transversely isotropic with respect to the x @entity2270 . Data of the perpendicular osteons were transversely isotropic with respect to the z @entity2270 . SIGNIFICANCE: Having actual micromechanical properties as a function of orientation in the mandible could provide base line data for: @entity174 repair; choice of bone replacement materials.
