The document discusses the importance of maintaining good oral hygiene. It states that oral hygiene includes keeping the mouth clean and is necessary to prevent dental issues. Maintaining good oral hygiene can prevent dental caries, gingivitis, periodontitis, and bad breath. The basic steps for good oral hygiene are brushing teeth twice a day, flossing regularly, having a proper diet, using interdental cleaners, rinsing the mouth, and regular dental checkups.