The brittle bone disease osteoporosis even affects your jaw bone and can cause tooth loss. Bacteria from gum disease can also break down such jaw bone. Bisphosphonates is a medicine sometimes given to osteoporosis
patients,it prevent the loss of bone mass. Osteonecrosis (i.e. degeneration of bone) of the jaw is sometimes seen in a person with a history of bisphosphonate use who undergoes subsequent dental surgery. So,before undergoing any dental treatment you should inform your dentist if you take 
bisphosphonates.