My 5 yr. old male had teeth scaling / cleaning 4 weeks ago, and sadly two back teeth extracted, but their is still some redness and light bleeding around the area when I brush. He was brought back to vet 2 weeks after procedure and got a clean bill.
Also my 2 year old fem. had the cleaning / scaling done twice by 2 different vets (08, 09) but gum area above the teeth in back also bleeds some when I brush. My other 2 cats have no dental issues.
They're all fed organic chicken necks everyday, along with raw turkey,raw ground chicken mix, and freeze dried lamb. Canned makes up about 15% of diet: paul newman organics or nature's variety.

Using a dbl.ended petrodex brush on all 4 cats. Ea. has their own brush and brushes cleaned in water and peroxide after use.

Don't want to keep making trips to vet. Is there something I can add to the brushing or medication to obtain from vet?

Thanks.