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Changed Morphology and Mechanical Properties of Cancellous Bone in the Mandibular Condyles of Edentate People

E.B.W. Giesen1,2,*, M. Ding3, M. Dalstra3,4, and T.M.G.J. van Eijden2

1 Department of Orthodontics and Oral Biology, University Medical Centre Nijmegen, University of Nijmegen, PO Box 9101, 6500 HB Nijmegen, the Netherlands;
2 Department of Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, the Netherlands;
3 Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus, Denmark; and
4 Orthodontic Department, Royal Dental College, Aarhus University, Aarhus, Denmark;



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Figure 1. Examples of three-dimensional reconstructions of samples originating from the edentate (A) and dentate (B) groups. The structure changed from plate-like (dentate, SMI = 0.39) toward more rod-like (edentate, SMI = 1.26).

 


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Figure 2. E-modulus and ultimate stress vs. angle (A,B) and E-modulus and ultimate stress vs. bone volume fraction (C,D) of both the edentate (open symbols) and dentate (closed symbols) subjects; angle (°) is the angle of the main trabecular direction relative to the direction of testing (see text).

 





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