TMJ lubrication system: its effect on the joint function, dysfunction, and treatment approach.

Normal temporomandibular joint (TMJ) movements primarily depend on free sliding of the disc down the slope of the eminence. Therefore, understanding the lubrication system and how aberrations in this system contribute to TMJ is important. Its effect on dysfunctions, such as disc displacement, anchored disc phenomenon, open lock, and osteoarthritis, are discussed in this article.