The most effective preventive measure against periodontal disease is to develop good oral health habits for children. There are basic preventive measures to help your child maintain good oral health: • Establish good oral hygiene habits early on. When your child is 12 months old, start using toothpaste when you brush his or her teeth. It's necessary to start flossing when the gap between your child's teeth closes. • Be a positive role model by maintaining good oral hygiene habits. • Schedule routine dental appointments for family examinations, periodontal examination, and cleaning. • Check the child's mouth for symptoms of periodontal disease, like bleeding gums, swollen and red gums, gums moving away from the teeth, and bad breath.