Oral preventive medicine takes the population as the main research object, applies the theories of biology, environmental medicine, preventive medicine, clinical medicine and social medicine, combines macro and micro, and studies oral diseases of the population, group preventive measures and personal preventive health care methods as the basic elements. Through research, we can discover and master the occurrence, development and distribution of oral diseases, and study various factors affecting oral health as well as preventive measures and countermeasures, so as to prevent oral diseases and promote the oral health level of the whole society.
The research contents of oral preventive medicine include: oral epidemiology and oral health survey methods, prevention of dental caries and periodontal diseases, prevention of other oral diseases, development and use of oral health products, oral health care for specific groups, oral health promotion and health education, oral health project management and oral health policy, and infection control in oral health care.