Oral hygiene is the practice of keeping the mouth, teeth, and gums clean and healthy to prevent dental problems such as cavities, gum disease, and bad breath. This includes regular brushing and flossing, using mouthwash, and visiting the dentist for checkups and cleanings. Good oral hygiene is important for maintaining overall health and well-being, as poor oral hygiene can contribute to a range of health issues, including heart disease and diabetes. Research in the field of oral hygiene focuses on developing new techniques and products to improve oral health outcomes and prevent dental problems.