A dental laser system comprising: at least one electromagnetic energy source; at least one controller coupled to the at least one electromagnetic energy source, the controller coupled to a graphical user interface configured to enable a user to provide input to the controller to control at least one operating parameter of the at least one electromagnetic energy source, wherein under control of the controller, the graphical user interface is configured and arranged to render graphical content; the at least one controller configured and arranged to enable a user to control a plurality of parameters of the dental laser system with a single action or input to the graphical user interface, wherein the single action or input from the user involves the interaction with a graphical portion of the controller, wherein the interaction controls more than one operational parameter of the dental laser system without a requirement for the user to provide an additional or substantially simultaneous interaction with any other adjacent controller or graphical portion of the graphical user interface; and at least one graphic indicative of at least one of a mode, an operational status, and an operational parameter of the dental laser system, wherein the at least one graphic is displayed, updated, or animated by the at least one controller, characterised in that each of the plurality of parameters is adjustable by a user selectable slider (410, 415, 420, 425, 430, 435) on the graphical user interface, and wherein adjusting one of the sliders at a specific rate causes any one or more of the other sliders (415, 420, 425, 430, 435) to move at the same or at a different rate. at least one electromagnetic energy source; at least one controller coupled to the at least one electromagnetic energy source, the controller coupled to a graphical user interface configured to enable a user to provide input to the controller to control at least one operating parameter of the at least one electromagnetic energy source, wherein under control of the controller, the graphical user interface is configured and arranged to render graphical content; the at least one controller configured and arranged to enable a user to control a plurality of parameters of the dental laser system with a single action or input to the graphical user interface, wherein the single action or input from the user involves the interaction with a graphical portion of the controller, wherein the interaction controls more than one operational parameter of the dental laser system without a requirement for the user to provide an additional or substantially simultaneous interaction with any other adjacent controller or graphical portion of the graphical user interface; and at least one graphic indicative of at least one of a mode, an operational status, and an operational parameter of the dental laser system, wherein the at least one graphic is displayed, updated, or animated by the at least one controller, characterised in that each of the plurality of parameters is adjustable by a user selectable slider (410, 415, 420, 425, 430, 435) on the graphical user interface, and wherein adjusting one of the sliders at a specific rate causes any one or more of the other sliders (415, 420, 425, 430, 435) to move at the same or at a different rate.