Track topics on Twitter Track topics that are important to you
Summaryâ€‚ 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 3â€ƒcm. 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 2â€ƒcm. However, when the jaw opening-closing reached 3â€ƒcm, 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.
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,
This article was published in the following journal.
Name: Journal of oral rehabilitation
The purposes of this study were to measure the activity of glutathione peroxidase (GPX) and nitric oxide (NO) in the synovial fluid of patients with temporomandibular joint (TMJ) internal derangement ...
Ganglion and synovial cysts of the temporomandibular joint (TMJ) are rare. Although histopathological findings differ, clinical presentation is comparable. This study adds a case report of a ganglion ...
The temporomandibular joint (TMJ) is a small synovial joint at which the mandible articulates with the skull during movements involved in speaking and mastication. However, the secondary cartilage lin...
To investigate the correlation of the polymorphism of MMP-1 promoter (-1607 1G/2G) with the susceptibility to anterior disc displacement (ADD) and temporomandibular joint osteoarthritis (TMJ OA).
Osteoarthritis (OA) is associated with a local inflammatory process. Dyslipidemia is known to be an underlying cause for the development of OA. Therefore, lipid and inflammatory levels were quantified...
To analyze the relationship between composition of synovial fluid and its lubrication properties
This study will examine the effectiveness of injected hylan (Synvisc) for treating pain associated with osteoarthritis of the temporomandibular joint (jaw joint) and improving function of ...
The primary aim of the study is to evaluate the effects of two local cryotherapy (ice or cold gas) applications on arthritic knees. Evaluation criteria (before/after treatment): ...
Nociceptin/Orphanin is a novel opioid peptide system associated with inflammatory response. Currently is it uncertain as to the presence of absence of nociceptin in synovial fluid of patie...
This study will examine the genetic and immune factors involved in the cause and development of psoriatic arthritis-a disease of both the skin and joints. It will describe the medical fea...
The clear, viscous fluid secreted by the SYNOVIAL MEMBRANE. It contains mucin, albumin, fat, and mineral salts and serves to lubricate joints.
Non-neoplastic tumor-like lesions at joints, developed from the SYNOVIAL MEMBRANE of a joint through the JOINT CAPSULE into the periarticular tissues. They are filled with SYNOVIAL FLUID with a smooth and translucent appearance. A synovial cyst can develop from any joint, but most commonly at the back of the knee, where it is known as POPLITEAL CYST.
The inner membrane of a joint capsule surrounding a freely movable joint. It is loosely attached to the external fibrous capsule and secretes SYNOVIAL FLUID.
The mechanical laws of fluid dynamics as they apply to urine transport.
A variety of conditions affecting the anatomic and functional characteristics of the temporomandibular joint. Factors contributing to the complexity of temporomandibular diseases are its relation to dentition and mastication and the symptomatic effects in other areas which account for referred pain to the joint and the difficulties in applying traditional diagnostic procedures to temporomandibular joint pathology where tissue is rarely obtained and x-rays are often inadequate or nonspecific. Common diseases are developmental abnormalities, trauma, subluxation, luxation, arthritis, and neoplasia. (From Thoma's Oral Pathology, 6th ed, pp577-600)
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...
Stress is caused by your perception of situations around you and then the reaction of your body to them. The automatic stress response to unexpected events is known as 'fight or flight'. Discovered by Walter Cannon in 1932, it is the release of h...
Dentistry is the study, management and treatment of diseases and conditions affecting the mouth, jaw, teeth and their supporting tissues (Oxford Medical Dictionary) The work of a dentist ranges from regular patient check-up to orthodontics and surgery....