My Maya had this done just a few months ago. The vet usually checks their teeth when he gives them their yearly shots and this time Maya's gums were quite inflamed.

My vet told me that the anesthethic they give them for this type of procedure is a lighter one (at least over here) and Maya came round quite quickly.

I'm pleased that you found out what was causing her not to eat, I'm sure things will improve after her teeth are cleaned.