Though you should schedule dental appointments for thorough cleanings twice a year, nothing can help you more than good oral hygiene at home. Brushing twice a day, or after meals, with a soft bristle toothbrush and then flossing will greatly reduce plaque buildup that may lead to tooth decay, gingivitis, and periodontal disease. The cleanings you visit the dentist for include X-rays that can pinpoint where problems may be below the surface of the gum.