Document Detail

Dynamic properties of the human temporomandibular joint disc.
MedLine Citation:
PMID:  11379888     Owner:  NLM     Status:  MEDLINE    
The cartilaginous intra-articular disc of the human temporomandibular joint shows clear anteroposterior variations in its morphology. However, anteroposterior variations in its tissue behavior have not been investigated thoroughly. To test the hypothesis that the mechanical properties of fresh human temporomandibular joint discs vary in anteroposterior direction, we performed dynamic indentation tests at three anteroposteriorly different locations. The disc showed strong viscoelastic behavior dependent on the amplitude and frequency of the indentation, the location, and time. The resistance against deformations and the shock absorbing capabilities were larger in the intermediate zone than in regions located more anteriorly and posteriorly. Because several studies have predicted that the intermediate zone is the predominantly loaded region of the disc, it can be concluded that the topological variations in its tissue behavior enable the disc to combine the functions of load distribution and shock absorption effectively.
M Beek; M P Aarnts; J H Koolstra; A J Feilzer; T M van Eijden
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dental research     Volume:  80     ISSN:  0022-0345     ISO Abbreviation:  J. Dent. Res.     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-05-29     Completed Date:  2001-06-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0354343     Medline TA:  J Dent Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  876-80     Citation Subset:  D; IM    
Department of Functional Anatomy, Academic Center for Dentistry Amsterdam (ACTA), The Netherlands.
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MeSH Terms
Aged, 80 and over
Cartilage, Articular / anatomy & histology,  physiology
Compressive Strength
Energy Transfer
Stress, Mechanical
Temporomandibular Joint Disk / anatomy & histology,  physiology*

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