Those edge dings on the glass will sand out pretty easily with 180-220 grit sand paper. but....if you have actual dents in the edge of the wood, that can be a little tricky to do without throwing your limbs out of tiller.
I've taken dents out of furniture before by sanding the finish off and using a wet rag and a hot iron to raise the grain, then sanding it flush again.... I've never tried that on the edge of a limb before. .02 cents worth.
Kirk