Articulating surfaces, types, and movements of the temporomandibular joint
Clinical significance of temporomandibular joint movements
The temporomandibular joint (TMJ) facilitates jaw movement and is critical for chewing and speaking. Its dysfunction can lead to pain and mobility issues, necessitating proper clinical evaluation.
Articulating Surfaces, Types, and Movements of the Temporomandibular Joint
Introduction
The temporomandibular joint (TMJ) plays a crucial role in jaw mobility, allowing for complex movements necessary for chewing, speaking, and other oral functions. Understanding its articulating surfaces, types, and movements is essential for diagnosing and treating TMJ disorders.
Articulating Surfaces
The TMJ consists of the mandibular condyle and the articular eminence of the temporal bone, separated by an articular disc that aids in smooth movement.
Types of Movements
- Hinge Movement: Occurs in the lower joint compartment, enabling jaw opening and closing.
- Gliding Movement: Occurs in the upper joint compartment, allowing protrusion and retraction.
- Lateral Movement: Side-to-side movement used in mastication.
Clinical Significance
TMJ dysfunction can lead to symptoms like pain, clicking, and restricted movement. Common causes include bruxism, arthritis, and disc displacement. Proper diagnosis through imaging and clinical examination is essential.
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