Dr. Mark, I want to thank you for your products. So inexpensive so that anyone can afford them. I live on a very limited income and did not go to a dentist. By the time I had a dental emergency the damage had been done. Receding gums, loose teeth (most have tightened up again), and pockets. I have hip and shoulder pain, some sinus, that I think are connected. I’m looking forward to using your (calcium materials) to heal my mouth and life. ~ JoAnne in OH