A dental mirror includes a mirror assembly and a handle having an interior
cavity. The handle further includes a non-circular aperture proximate one
end, which communicates with the interior cavity. A push-arm extends
through the aperture toward the mirror assembly and has a non-circular
shape. The push-arm also has a wiper support, and a sponge is secured
within the wiper support. The push-arm is selectively movable to carry
the sponge over the mirror assembly, and the aperture prevents relative
rotation of the push-arm.