Hanau's laws and the so-called articulation quintet have contributed greatly to the evolution of the prosthetic dentistry and have been further elaborated by various authors. The main aim of this study was to establish the stability of prosthetic plates by attaining balanced occlusion. Several authors have addressed the problem of removable and fixed prostheses by classifying mandibular movements into functional and parafunctional movements which extends the classical occlusal mechanics for the modern occlusal feedback model. Moreover, they suggest the use of the angle of convergence as a reference plane when manufacturing prosthetic.
Keywords: bruxism; cuspal guidances; occlusal guidance; occlusal plane.