The articular surfaces of the temporomandibular joint (TMJ) are unique compared to most other synovial joints in the body. While many synovial joints are covered by hyaline cartilage, the TMJ is covered by fibrocartilage.

- The TMJ functions differently from typical synovial joints because it endures high mechanical stress due to frequent chewing and complex mandibular movements.
- Fibrocartilage is more durable and resistant to shear forces than hyaline cartilage. This makes it better suited to withstand the repetitive loading and compressive forces at the TMJ.
- Additionally, fibrocartilage has a greater capacity for repair and regeneration, which is beneficial given the constant use of the joint.
- The presence of fibrocartilage on both the temporal bone’s articular surface and the mandibular condyle enhances the joint’s ability to absorb shock and maintain function over time.
- Neither elastic cartilage nor dense fibrous connective tissue are typical for articular surfaces, as elastic cartilage is found mainly in structures requiring flexibility (like the ear), and dense fibrous connective tissue does not provide the necessary smooth, low-friction surface for joint movement.

Therefore, the correct answer is fibrocartilage.

Reference: Gray's Anatomy, 42nd Edition, Volume 1, Chapter: The Temporomandibular Joint / Page 650