Dental crowns are machined in two stages: the first stage is done in soft material with 5 axis CNC machines with carbide end-mils where most of the material is removed. The second stage is done with grinding pins after sintering of the crown (to hard condition). TELCON is one of the first and only companies to manufacture micro PCD ball-mills which allow skipping the 1st stage of soft material and machining of the crown already in hard condition, enabling using natural hard ceramics (without the need to sinter), while shortening patient chair-time.