OMDR - TMJ

1. What structure divides the TMJ into upper and lower compartments?

• Articular capsule

• Articular disk

• Synovial membrane

• Mandibular condyle

       Which region of the temporomandibular joint (TMJ) is the most vascularized?

• Articular surface of the mandibular condyle

• Articular surface of the mandibular condyle

• Retrodiscal (posterior) tissue

• Articular surface of the temporal bone

  Which of the following imaging modalities is most effective for evaluating soft tissue structures, such as the articular disc, within the TMJ?

• Panoramic radiography

• Cone Beam Computed Tomography (CBCT)

• Magnetic Resonance Imaging (MRI)

• Ultrasonography

   A hyperintense signal on a T2-weighted MRI image of the TMJ is most likely indicative of which of the following?

• Healthy articular disc

• Fibrous tissue proliferation

• Inflammatory changes in the joint space or fluid

• Normal condylar morphology

   Which TMJ disorder is characterized by progressive bone destruction, joint pain, and reduced range of motion, often seen in elderly patients?

• Disc displacement with reduction

• Synovial chondromatosis

• Osteoarthritis

• Myofascial pain syndrome

Which MRI sequence is typically preferred for evaluating the articular disc in the TMJ due to its ability to distinguish between soft tissues and fluid?

•  T1-weighted sequence

• T2-weighted sequence

• Proton Density (PD) sequence

• Diffusion-weighted imaging

  When using MRI for the evaluation of temporomandibular joint (TMJ) dysfunction, what is the primary role of dynamic (cine) MRI?

• Detecting early osteoarthritis in the condylar head

• Assessing disc position in static closed-mouth views only

• Visualizing real-time disc-condyle relationships during mandibular movement

• Evaluating blood supply to the TMJ structures

In an MRI assessment of TMJ, which of the following findings would suggest disc displacement without reduction?

• Normal positioning of the disc in both closed- and open-mouth positions

• The disc remains anterior to the condyle in both closed- and open-mouth positions

• The condyle moves past the disc during the open-mouth position

• The disc is posterior to the condyle in the closed-mouth position

In MRI imaging of TMJ, which of the following structures is crucial for distinguishing between anterior and anterolateral disc displacement?

• Mandibular condyle

• Glenoid fossa

• Lateral pterygoid muscle attachment

• Temporal bone

Which CBCT imaging plane is most used to evaluate condylar morphology and cortical bone integrity in the TMJ?

• Axial plane

• Sagittal plane

• Coronal plane

• Transverse plane