Gysi's most important work was his book, _Die Artikulation des Unterkiefers_ (1908), in which he described his studies of the anatomy and function of the temporomandibular joint. He also developed several instruments and techniques for measuring occlusion and articulation, including the Gysi Simplex Articulator.
Gysi's work had a profound impact on the development of dentistry, and he is considered to be one of the fathers of modern occlusion and articulation.
Here is a list of some of Alfred Gysi's most important works:
* _Anatomie der Kaumuskulatur_ (1897)
* _Die Artikulation des Unterkiefers_ (1908)
* _The Problem of Articulation_ (1910)
* _A Textbook of Prosthetic Dentistry_ (1915)
* _Studies on the Mandibular Joint_ (1929)
* _Der Kauapparat des Menschen_ (1940)
Gysi's work has been translated into many languages, and he has received numerous awards and honours for his contributions to dentistry. He is considered to be one of the most important figures in the history of dentistry.