Search results
Results From The WOW.Com Content Network
The most important feature is pain, followed by restricted mandibular movement, [2] and noises from the temporomandibular joints (TMJ) during jaw movement. Although TMD is not life-threatening, it can be detrimental to quality of life ; [ 3 ] this is because the symptoms can become chronic and difficult to manage.
Trismus is defined as painful restriction in opening the mouth due to a muscle spasm, [5] however it can also refer to limited mouth opening of any cause. [6] Another definition of trismus is simply a limitation of movement. [4]
Tetanus (from Ancient Greek τέτανος ' tension, stretched, rigid '), also known as lockjaw, is a bacterial infection caused by Clostridium tetani and characterized by muscle spasms. In the most common type, the spasms begin in the jaw and then progress to the rest of the body.
In anatomy, the temporomandibular joints (TMJ) are the two joints connecting the jawbone to the skull. It is a bilateral synovial articulation between the temporal bone of the skull above and the condylar process of mandible below; it is from these bones that its name is derived.
tmj The TMJ is formed from the temporal bone of the cranium, specifically the glenoid fossa and articular tubercle and the condyle of the mandible, with a fibrocartilaginous disc lying in between. It is classified as a ginglymoarthrodial joint [ 5 ] and can perform a range of gliding and hinge type movements.
The four classical muscles of mastication elevate the mandible (closing the jaw) and move it forward/backward and laterally, facilitating biting and chewing. Other muscles are responsible for opening the jaw, namely the geniohyoid, mylohyoid, and digastric muscles (the lateral pterygoid may play a role).
The movement area of the mandible in the sagittal and horizontal planes is characteristic of the individual but varies in different persons. However, the border movement paths are reproducible in the same individual. It is suggested that the temporomandibular joints (TMJ) limit the border movements of the mandible.
Conservative management of minor fractures can lead to trismus (lockjaw) that can later only be corrected by removing the coronoid process. [1] For serious fractures, a surgery involving open reduction and internal fixation can have good outcomes. [1]