Over a week ago, before I started the calcium treatment, I had flossed my gums and they bled like crazy. So for a week I have been using the CZ Toothbrush with calcium daily and I haven’t been flossing. Since I got the Oral-Cal rinse, I did floss once, and to my amazement, no bleeding. So the calcium must be working. Great! Thanks for all of your help. – VH in California.