What causes periodontitis?

The main cause of periodontitis is bacterial plaque: a sticky film that constantly builds on your teeth, as well as your body's response to that film. The bacterial plaque forms in all  people , but it does not cause periodontitis in everybody.

Whether you will have periodontitis has to do also with daily home oral care (including proper brushing and flossing), number of visits to the dentist for professional cleaning, smoking,  gene predisposition as well as cerain diseases like diabetes.