Abstract:
:Since edentate subjects have a reduced masticatory function, it can be expected that the morphology of the cancellous bone of their mandibular condyles has changed according to the altered mechanical environment. In the present study, the morphology of cylindrical cancellous bone specimens of the mandibular condyles of edentate subjects (n = 25) was compared with that of dentate subjects (n = 24) by means of micro-computed tomography and by the application of Archimedes' principle. Stiffness and strength were determined by destructive mechanical testing. Compared with dentate subjects, it appeared that, in edentate subjects, the bone was less dense and the trabecular structure was less plate-like. The regression models of stiffness and strength built from bone volume fraction and the trabecular orientation relative to the axis of the specimen were similar for both dentate and edentate subjects. This indicates that, under reduced mechanical load, the fundamental relationship between bone morphology and mechanical properties does not change.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Giesen EB,Ding M,Dalstra M,van Eijden TMdoi
10.1177/154405910408300314keywords:
subject
Has Abstractpub_date
2004-03-01 00:00:00pages
255-9issue
3eissn
0022-0345issn
1544-0591journal_volume
83pub_type
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