Abstract
Today, there are various designs and materials in dental implant prosthetics. Different manufacturing methods also affect designs. Moreover, the advent of CAD/CAM has widen the variety of designs. I currently employ several kinds of CAD/CAM to produce prostheses in daily clinical practice. However, CAD/CAM is not always the most appropriate equipment. There are a wide range of cases from single tooth replacement to full mouth reconstruction and designs such as fixed, fixed-removable and removable superstructures with different maintainability. ①CAD/CAM has enabled fabrication of titanium, and passive fit may be achieved. ②Galvano crowns jointed by a substructure and screws are durable and removable (hence maintainable) and may facilitate replacement of prostheses. ③It is easier to replace prostheses or bridges on implants jointed by milled substructures, for anterior and molar parts are separable and replaceable piece by piece.
