I used to brush and avoid touching my gums.. then I had a dentist insist I should also be brushing across my gum lines to keep them healthy. So, not sure if you went crazy with the electric, or if maybe it was something else? Also, not sure if you called 5 dentists if you'd get 1, or more than 1 opinion on this. But I am told I have healthy gyms and I do brush over the line between tooth and gum.