Preventive dentistry is the area of dentistry that focuses on those procedures and life practices that help people to prevent the beginning or progression of oral disease or to catch it in its early, more treatable stages . It includes at-home dental care performed by patients, as well as dental care and education by professional dental staff in the office or clinic. it's done by the dental staff in their offices to help patients maintain healthy teeth and gums. In either case, the objective is to stop the development of oral disease or to find it at an early stage. Dental health professionals most often look for early signs of periodontal disease and dental decay, or any other abnormalities. this include regular check ups every 6 months for diagnosis and professional cleaning of teeth. it also includes pits and fissure sealants which is a preventive treatment to protect teeth from decay