Dental Prosthetics is the branch of dentistry that deals with morphological and functional restoration of the dental arches interrupted by the toothless gap. Edentulous restorations replace toothless gaps from one tooth to the full arch. Dental works may be fixed, mobile or movable. Over time they have imagined many confection materials in dental work. These materials had to meet several qualities: to be resistant, to be aesthetic, to be biologically compatible, allowing their processing so as to render the shape of a natural tooth. We now consider the material of choice in dental ceramic restorations is dental ceramics.