Let me check for you-- I reached out to someone w/ more experience on this than I and this is what he has recommendedI am not able to order it or buy it where I live so I do need to find an alternative...
I'd say the swelling is still a main concern when compared to the teeth at this point. Perhaps the vet can draw some fluid from the swollen tissue and do a direct test on it. That would help determine if it's water retention or if there are uric acid crystals forming etc.
As far as the teeth go, some crunchy food might help. I know they went off dubias but perhaps something like cut fresh green beans would be chewy enough to be a bit abrasive. If she allows a qtip to be rubbed on the teeth that may help a bit on its own. I would be hesitant to cause further stress by messing with the gums at the moment. The maxiguard just acts as a cleanser to help prevent infection. An alternative cleanser that is sometimes used is chlorhexidine solution.