Q. hi i have suffered with bone loss through gum disease since i was in my thirties. i am now 43 and the appearance of my teeth do bother me, although i have not yet lost any teeth.why can,t bone be grafted before losing the teeth ? what , if any reasons, would prevent me from having successful implants in the future, and could i begin with my dental implants before the teeth look any worse ? lastly, how many implants are needed to replace 20 teeth, and what would they cost , including bone grafting ? i am grateful for any advice as this problem is affecting me greatly yours gratefully sandy,