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Synovial fluid dynamics with small disc perforation in temporomandibular joint.

06:00 EDT 16th May 2012 | BioPortfolio

Summary of "Synovial fluid dynamics with small disc perforation in temporomandibular joint."

Summary  The articular disc plays an important role as a stress absorber in joint movement, resulting in stress reduction and redistribution in the temporomandibular joint (TMJ). The flow of synovial fluid in the TMJ may follow a regular pattern during movement of the jaw. We hypothesised that the regular pattern is disrupted when the TMJ disc is perforated. By computed tomography arthrography, we studied the upper TMJ compartment in patients with small disc perforation during jaw opening-closing at positions from 0 to 3 cm. Finite element fluid dynamic modelling was accomplished to analyse the pattern of fluid flow and pressure distribution during the movements. The results showed that the fluid flow in the upper compartment generally formed an anticlockwise circulation but with local vortexes with the jaw opening up to 2 cm. However, when the jaw opening-closing reached 3 cm, an abnormal flow field and the fluid pressure change associated with the perforation may increase the risk of perforation expansion or rupture and is unfavourable for self-repair of the perforated disc.

Affiliation

Department of Orthodontics, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou Department of Applied Mechanics and Engineering, Sun Yat-sen University, Guangzhou Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology,

Journal Details

This article was published in the following journal.

Name: Journal of oral rehabilitation
ISSN: 1365-2842
Pages:

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