BlueLight analytics inc. develops and distributes MARC, a system that simply and accurately measures the energy a simulated white resin restoration actually receives from a dental curing light. The curing light is the blue light used by dental professionals at the end of the process of placing a filling. MARC uses an energy sensor in a resin tooth that is connected to a spectroradiometer. The tooth is mounted within a dental mannequin head and controlled through a simple user interface on a laptop computer.