کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8462900 | 1549044 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biomechanical analysis of stress distribution in the temporomandibular joint
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
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چکیده انگلیسی
The positions of the head of the mandible, the articular disc and the outline of the temporal surface are digitised from sagittal MRT-scans of the mandibular joint of a 32-year-old subject in five different positions of occlusion. The stress distribution in the joint is calculated on the basis of these data. For each position of the condyle, the momentary point of rotation in the head of the mandible and the tangent attached to the temporal surface are determined. The line connecting these two points indicates the direction of the resulting bearing force. Furthermore, the extension of the area available to the force transmission is estimated. By means of these parameters, the stress distribution is calculated independently of the position. The analyses show that the mandibular joint is slightly eccentrically loaded in all positions. The increase in stress is in all cases oriented caudo-ventrally. The results are verified in an anatomical specimen of the articular tuberculum. The trabecular structures as well as the subchondral bone-lamella of the articular tuberculum are functionally adapted to the analysed stress situations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Anatomy - Anatomischer Anzeiger - Volume 189, Issue 4, 11 July 2007, Pages 329-335
Journal: Annals of Anatomy - Anatomischer Anzeiger - Volume 189, Issue 4, 11 July 2007, Pages 329-335
نویسندگان
Rainer Breul,