Dental prosthesis processing device and method of managing processing tool of the same

A method of managing processing tools of a dental prosthesis processing device comprising one or more processing tools for processing a workpiece into a prosthesis of a predetermined shape;

• a spindle on which the processing tools are replaceably mounted and that is spatially movable in position;
• a processing tool replacement obstruction part located in close proximity to the processing tools and/or the spindle and configured to obstruct the processing tools from being replaced;
• and a controller configured to determine whether to replace the processing tools, the method comprising:
• determining by the controller whether to replace the processing tools;
• in response to determining that replacement of the processing tools is not necessary, preventing the processing tools from being replaced by bringing the processing tools and/or the spindle and the processing tool replacement obstruction part close to each other by the controller, and
• in response to determining that the replacement of the processing tools is necessary, allowing a user to replace the processing tools by moving the processing tools and/or the spindle and the processing tool replacement obstruction part away from each other by the controller.