In this episode, I discuss the all on four concepts and exactly what that means and review an article from the International Journal of Oral & Maxillofacial implants 2018 titled the biomechanical comparison of different implant inclinations and cantilever links in All-on-4 treatment concept by three-dimensional finite element analysis. I don't want you to worry, I do get into this article but I will promise not to bore you to death and make this too heavy but more clinical in nature.