**8.1 Poor plaque control and lack of regular supportive therapy**

Poor plaque control and a lack of regular supportive therapy constitute the risk factors for developing peri-implantitis. A 5-year follow-up revealed a lower incidence of peri-implantitis with regular supportive care [20]. A 10-year follow-up study also revealed that patients on a regular maintenance program had less chances of developing peri-implantitis [38].
