hi Sunflower, I didn't know about Q10 for rubbing into the gums! That's another good way too.

I personally feel though that gum problems are related to the internals, so the nutrients mentioned are good for that (taken internally). Like with myself, I got receding gums after my immune system got so much worse and I developed periodontal gum disease. Then my gums receded more after antibiotic use.

So there is definitely a lack of good bacteria involved in this also. Perhaps along with those nutrients, probiotics might be wise also. Diet of course plays a big role, without that, I cannot imagine much else will be too useful.