Clean the damaged area of the desk with a sponge and soapy water.
Fill the dented spots with wood putty, if repairing a wood desk. If repairing a metal or plastic desk, mix epoxy resin with hardener and fill the dented spots with epoxy.
Smooth the putty or epoxy with a putty knife to make the repaired portion level with the rest of the desk. Allow the putty or epoxy to dry overnight.
Sand the putty or epoxy to create an even surface and to feather the repaired area into the rest of the desk.
Apply paint and/or varnish over the repaired area to match it to the desk’s original finish.