Dental TMJ has the following: A 2 joint cavities & 1 articular disc. B 1 joint cavity & 1 articular disc. C 1 joint cavity & 2 articular disc. D 2 joint cavities & 2 articular discs. 💡 Explanation TMJ has the following: ✓ Correct Answer: A. 2 joint cavities & 1 articular disc.