Yes, my gums swelled badly behind my front teeth after a couple of weeks on SS and got to the point where I was starting to get worried. I came on here and saw some advice that an ex dental nurse had offered to try chewing sugar free gum which stimulates your gums. They can miss the action of chewing you see. I started doing that (on top of brushing twice a day, flossing and mouthwash) and it has gone down alot but not completely so going to see my dentist in a couple of weeks