As a human, I wouldn't redeploy a damaged fighter craft, even if the damage was superficial. Considering the machine nature of the Cylons, I don't think they would redploy a damaged Cylon fighter either, as it would be inefficient and risky. Besides, I'm sure somewhere there's a Cylon factory churning out countless bodies, fighters, key chains, etc. Why recycle when you can have a new item?
Then again, anything we say here is merely speculation as there are many facts about the BSG universe that we don't know about...