There are also the medial and lateral collateral ligaments that are intra-capsular and that connect the articular disc
to the TMJ joint capsule (Norton).
Clicking occurs when the condylar head of the mandible skips the rear edge of the displaced articular disc
during mouth opening and/or closing.
TMJ articular surfaces are in contact with the articular disc
, a flexible and biconcave structure composed of a fibrous structure and nourished by synovial fluid.
It is important to note that the articular disc
modeled in this work is not a faithful representation of the actual anatomy of the human articular disc
, but it is a better condition than the simple omission of this region in models that study the efforts in the TMJ region.
In the clinical examination, 25 individuals were under orthodontic treatment, speech therapy or otorhinolaryngology treatment; 35 individuals had absence of maxillary and mandibular anterior teeth or the first permanent molars (upper and lower), 18 individuals experienced displacement of articular discs
, 18 individuals presented no temporomandibular dysfunction, being considered healthy subjects, and 33 individuals had a confirmed diagnosis of muscular temporomandibular dysfunction and were included in this study.
(10) These include the articular disc
, volar and dorsal radio-ulnar ligaments, extensor carpi ulnaris subsheath, and the ulnocarpal ligaments.
Key Words: Articular disc
masticatory muscles roe deer temporomandibularis joint.
(11) Further, thinning of the articular disc
has been shown to accompany increased ulnar variance, increasing risk of TFCC wear and perforation.
This is termed the articular disc
, or simply "disc," and is attached to the neck of the condyle just below the head by ligaments that secure it loosely.
The main components of the TMJ are the mandibular condyle, the mandibular fossa of the temporal bone, the articular disc
with collagen fibers interposed with between them, and a synovial [1-5].
Examination by MRI may be used to analyze the articular disc
position in the coronal and parasagittal planes, the translation movement of the head of the mandible, and the disc movement during mouth opening and closing.
The relationship between the temporomandibular joint capsule, articular disc
and jaw muscles.