Subluxation of temporomandibular joint- A clinical view
Journal Title: Journal of Dental Problems and Solutions - Year 2018, Vol 5, Issue 2
Abstract
In the temporomandibular joint (TMJ) with physiological disc position, the disc rotates posteriorly on the condyle to the maximum degree and the condyle translates to the maximum degree, which occurs simultaneously at the maximum mouth opening movement. Condylar hypermobility in the position of maximally open mouth leads to the subluxation of the joint, and the two terms can thus be considered synonyms. The predisposition of the morphological relations of the zenith of the articular eminence and the contours of the articular surfaces lead to an excessive anterior displacement of the condyle over the zenith eminence. In addition, the irregular movement of the disc-condylar complex can also occur. The aim of this paper is to explain the hyperextension of TMJ which may, along with anatomical predisposition to the maximally open mouth position, lead to subluxation or luxation of the joint. Subluxation is not associated with a specific pathological characteristic of the joint. However, apart from discomfort, a subluxation can also cause pain. The excursory movement of the condyle close to and over the individual opening limit can lead to stiffness of joints and the inability to open the mouth (open lock), which is a prominent clinical sign of TMJ luxation. Electronic axiography can show pathological hyperextension of the condyle, while x-ray diagnostics records the condition of subluxation. A spontaneous luxation is clinically evident and therefore radiological diagnosis is used only to confirm the condition. Magnetic resonance imaging shows the disc and in the position of the maximally open mouth, thus giving the responses of the disk relation to the hypermobile condyle. Therapeutic modalities include occlusal splints and oral appliances, physiotherapy, and the mouth opening self-control. The goal of the treatment is relaxation of the masticatory muscles, removal of pain in the joint and muscles, and better coordination of movement, particularly in cases when there is a predisposition of spontaneous luxation.
Authors and Affiliations
Badel Tomislav Badel, Laškarin Mirko, Zadravec Dijana, Čimić Samir, Pavičin Ivana Savić
Keywords
Related Articles
- EP ID EP536399
- DOI 10.17352/2394-8418.000060
- Views 92
- Downloads 0
Oral Mucosa Malignant Melanoma: Clinical Features, Diagnosis, Treatment, and a Case Report
Primary oral mucosa malignant melanoma is a rare and biologically aggressive neoplasm. It is estimated about 1~2% of all oral malignancies with the incidence increasing with age. The prognosis of oral mucosa malignant me...
Some Dentists in Nantes, France, Who Were Resistance Fighters
One day, while I was strolling along the streets of Nantes with my wife and daughter, I became intrigued by a memorial stone located on a staircase of 9, rue Boileau. A few days later, I came back with a pen to write dow...
Marginal bone resorption at dental implant – RTG analysis
Dental implants are modern solutions, they compensate the lost tooth or teeth in the maxilla or mandible. Their target is to improve the mastication, esthetics and phonation. They are made of metal, metal alloys or non-m...
Oral Health and Body Connection: Our Responsibilities as Health Care Professionals
Oral health has long been considered to be a separate specialty that is distinct from whole body health. However, poor oral health can promote systemic disease, and is found concomitantly with numerous systemic disease p...
Hematoma - A Complication of Posterior Superior Alveolar Nerve Block
The administration of anesthesia in dentistry is necessary to prevent pain in specific area of the oral cavity which is accomplished by blocking the branches of the trigeminal nerve. Posterior superior alveolar nerve blo...