Thank you very much for your input and your prompt response. I probably didn't clarify in my original post that my dental implants failed and the oral surgeon indicated that I had the beginnings of ONJ. It is been about 3 weeks and my gums are healing, but the back tooth adjacent to the missing teeth and the gum area that was affected is slightly sore so we are watching it. My bone health specialist indicated because of potential onj risks, I could not have reclast which is what I would prefer, as the Envista option sounds like it has potentially dangerous side effects. If that is my only option, I guess I will have to go that route and hope for the best.