The National Health Screening program has been implemented in Korea since 1980. First, we had searched recent scientific evidences and verified the accuracy of the data on target oral diseases. In order to determine the validity, we searched scientific bibliographic data and concluded that dental caries and periodontal disease were major oral problems. Second, we developed new improved forms for National Oral Health Screening. To improve these forms, we reviewed previous forms and gathered expert opinions. The new forms were consistent with the examination forms given to all age groups, and information on oral health conditions, dental education needs, and post-treatment care was included in the modified forms. We then designed manuals for dentists, which contained information on the screening criteria as well as consultation and patient education guidelines. The manuals were divided into three parts, including explanation of the screening criteria, standard of the decision, and education and consultation guidelines. By using these new and modified National Oral Health Screening forms, we expect an improvement in the National Oral Health Screening Program and enhancement in the oral health condition of patients.