A dental hand tool including a main body having a main body proximate end, a main body distal end, at least one dental utility conduit associated with the main body proximate end, and a dental disinfection system associated with the main body that disinfects dental fluid at a point of use. The dental disinfection system includes a disinfection reactor associated with the main body, a collimated germicidal UV light source end, a disinfection reactor distal end, disinfection reactor walls, a disinfection reactor fluid inlet that receives the dental fluid from a dental fluid source, a disinfection reactor dental fluid outlet that delivers the dental fluid to the point of use, and a disinfection reactor inner chamber. The collimated germicidal UV light source end directs collimated germicidal UV light toward the disinfection reactor distal end along a collimated germicidal UV light path that is substantially perpendicular to the disinfection reactor distal end, and substantially parallel to the disinfection reactor walls, such that germicidal UV light substantially fills the disinfection reactor inner chamber.