This Master's thesis compares the different surface properties of three dental milling cutters used in the production of dental prostheses. In the theoretical section of this thesis, the history of dental prostheses is given, along with their classification and types of materials used for their manufacture. Furthermore, the CAD/CAM system used for creating dental prostheses is thoroughly described, with an emphasis on its historical development and system elements, as well as its advantages and disadvantages and the materials it can process. The process of machine milling in the manufacture of dental prostheses is described in detail, with the focus on the milling tool, its classification, the materials from which it is made and its property requirements. In the experimental part of this thesis, an SEM analysis of the intact and worn surfaces of dental drills used in the fabrication of fifty dental crowns from pre-sintered zirconia blocks was performed. All three tools were subjected to the same conditions and the same parameters during the process of milling dental crowns. All tools have the same geometry and the same number of cutting blades, their fundamental difference lies in their chemical composition. The base material of all cutting tools is tungsten carbide highly alloyed with cobalt. One of the three tools is a hard metal without any coatings, while the other two are coated with diamond and titanium-nitride coating. As a part of this thesis, the PACVD process was used to coat the TiN-coated tool.